Question about 2005 Cadillac CTS

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Replace cylinder 4 fuel ejector

The circuit on the #4 fuel ejector is open. My #4 cylinder is misfiring due to the circuit being open on the fuel ejector.

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  • 23 Answers

That means you need a new injector.

Posted on Apr 18, 2014

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03 Nissan Altima showing codes P0304,P0102,P0154,P0113 what are they and how do i repair the problems.


Hi Chris.

p0304 = Number 4 Cylinder Misfire Detected

Faulty spark plug 4
Clogged or faulty fuel injector 4
Faulty ignition coil 4
Fuel injector 4 harness is open or shorted
Fuel injector 4 circuit poor electrical connection
Ignition coil 4 harness is open or shorted
Ignition coil 4 circuit poor electrical connection
Insufficient cylinder 4 compression
Incorrect fuel pressure
Intake air leak

The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4.


p0102 = Mass or Volume Air Flow Circuit Low Input

Faulty mass air flow sensor
Intake air leaks
Dirty mass air flow sensor
Dirty mass air filter
Mass air flow sensor harness is open or shorted
Mass air flow sensor circuit poor electrical connection

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner.
Reset code and drive vehicle.
If the code comes back, it may be necessary to replaced the mass air flow sensor.


p0154 = O2 Sensor Circuit No Activity Detected Sensor 1 Bank 2

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.


p0113 = Intake Air Temperature Sensor Circuit High

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.



Hope this helps
FYT

http://www.autocodes.com/make/nissan

Mar 26, 2017 | Nissan Cars & Trucks

1 Answer

My 2006 ford fusion sel v6 is having cylinder misfiring problems the codes it reads out are p0171 p0304 p0305 p0306 and p0300


p0171 is fuel injection system too lean - bank 1
possible causes
- Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection
p0304 is cylinder 4 misfire detected.
possible causes
Faulty spark plug 4 - Clogged or faulty fuel injector 4 - Faulty ignition coil 4 - Fuel injector 4 harness is open or shorted - Fuel injector 4 circuit poor electrical connection - Ignition coil 4 harness is open or shorted - Ignition coil 4 circuit poor electrical connection - Insufficient cylinder 4 compression - Incorrect fuel pressure - Intake air leak
p0305 is same as above but cylinder 5.
p0306 is same as above but cylinder 6.
p0300 is random misfire detected
possible cause
Faulty spark plug (s) - Faulty ignition coil (s) - Clogged or faulty fuel injector (s) - Intake air leak - Fuel injectors harness is open or shorted - Fuel Injectors circuit poor electrical connection - Ignition coils harness is open or shorted - Ignition coils circuit poor electrical connection - Insufficient cylinders compression - Incorrect fuel pressure

Oct 31, 2016 | 2006 Ford Fusion SEL

1 Answer

I have a Saab with a service code P0304 I looked into it usually bad ignition coil...I replaced the coil but No go, any ideas?


P0304 code means - Cylinder 4 Misfire detected.

Possible causes are:

- Faulty spark plug 4
- Clogged or faulty fuel injector 4
- Faulty ignition coil 4
- Fuel injector 4 harness is open or shorted
- Fuel injector 4 circuit poor electrical connection
- Ignition coil 4 harness is open or shorted
- Ignition coil 4 circuit poor electrical connection
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak

Jul 24, 2015 | Saab Cars & Trucks

1 Answer

How to fix a code P0304


The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes"

- Faulty spark plug 4
- Clogged or faulty fuel injector 4
- Faulty ignition coil 4
- Fuel injector 4 harness is open or shorted
- Fuel injector 4 circuit poor electrical connection
- Ignition coil 4 harness is open or shorted
- Ignition coil 4 circuit poor electrical connection
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak
most likely change your spark plugs these should be done every 60,000 km

Jul 13, 2014 | 1998 Kia Sportage

1 Answer

How do ya fix codes p0320&p0340


Ford Crown Victoria, Mercury Grand Marquis, Marauder, Lincoln Town Car 1999-2005
4.6L V8 - Auto 2

Print


Trouble Code: P0201

Cylinder 1 Injector Circuit Malfunction

Possible Causes:


Injector 1 connector is damaged, open or shortedInjector 1 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0202

Cylinder 2 Injector Circuit Malfunction

Possible Causes:


Injector 2 connector is damaged, open or shortedInjector 2 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0203

Cylinder 3 Injector Circuit Malfunction

Possible Causes:


Injector 3 connector is damaged, open or shortedInjector 3 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0204

Cylinder 4 Injector Circuit Malfunction

Possible Causes:


Injector 4 connector is damaged, open or shortedInjector 4 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0205

Cylinder 5 Injector Circuit Malfunction

Possible Causes:


Injector 5 connector is damaged, open or shortedInjector 5 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0206

Cylinder 6 Injector Circuit Malfunction

Possible Causes:


Injector 6 connector is damaged, open or shortedInjector 6 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0207

Cylinder 7 Injector Circuit Malfunction

Possible Causes:


Injector 7 connector is damaged, open or shortedInjector 7 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0208

Cylinder 8 Injector Circuit Malfunction

Possible Causes:


Injector 8 connector is damaged, open or shortedInjector 8 control circuit is open, shorted to ground or to powerPCM has failed (the injector driver circuit may be damaged)


Trouble Code: P0219

Engine Over-Speed Condition

Possible Causes:


Engine operated in the wrong transmission gear positionExcessive engine speed with gear selector in Neutral positionWheel slippage due to wet, muddy or snowing conditions


Trouble Code: P0230

Fuel Pump Primary Circuit Malfunction

Possible Causes:


FP or FSV circuit is open or shortedFuel pump relay VPWR circuit openFuel pump relay is damaged or has failedPCM has failed


Trouble Code: P0231

Fuel Pump Primary Circuit Low Input

Possible Causes:


FP or FSV circuit is open or shorted to groundFuel pump relay VPWR circuit open or fuel pump relay failedPCM has failed


Trouble Code: P0232

Fuel Pump Secondary Circuit High Input

Possible Causes:


Fuel pump relay contacts always closedFuel pump ground circuit has high resistanceFuel pump secondary circuit is shorted to powerLow speed fuel pump relay damaged or related circuit problem


Trouble Code: P0297

Vehicle Over-Speed Condition

Possible Causes:


The code indicates the vehicle was driven at very high engine speed (rpm) for too long. The PCM temporarily prohibits high engine speed by disabling the fuel injectors with this code set.


Trouble Code: P0300

Random Misfire Detected

Possible Causes:


Base engine mechanical fault that affects two or more cylindersFuel metering fault that affects two or more cylindersFuel pressure too low or too high, fuel supply contaminatedEVAP system problem or the EVAP canister is fuel saturatedEGR valve is stuck open or the PCV system has a vacuum leakIgnition system fault (coil, plug) affecting two or more cylindersMAF sensor contamination (it can cause a very lean condition)Vehicle driven while very low on fuel (less than 1/8 of a tank)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0301

Cylinder Number 1 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 1Fuel delivery component problem that affects only Cylinder 1 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 1TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0302

Cylinder Number 2 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 2Fuel delivery component problem that affects only Cylinder 2 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 2TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0303

Cylinder Number 3 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 3Fuel delivery component problem that affects only Cylinder 3 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 3TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0304

Cylinder Number 4 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 4Fuel delivery component problem that affects only Cylinder 4 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 4TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0305

Cylinder Number 5 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 5Fuel delivery component problem that affects only Cylinder 5 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 5TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0306

Cylinder Number 6 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 6Fuel delivery component problem that affects only Cylinder 6 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 6TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0307

Cylinder Number 7 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 7Fuel delivery component problem that affects only Cylinder 7 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 7TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0308

Cylinder Number 8 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 8Fuel delivery component problem that affects only Cylinder 8 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 8TSB 02-16-2 contains repair help for this code (LS & T-Bird)TSB 03-14-4 contains repair help for this code for COP ignition


Trouble Code: P0315

Unable to Learn Crankshaft Variation

Possible Causes:


Inspect the CKP sensor for damageInspect the CKP sensor for debris on the rotorInspect the crankshaft pulse wheel for damaged teethInspect the crankshaft pulse wheel for wobble (loose condition)


Trouble Code: P0316

Misfire in the First 1000 Revolutions

Possible Causes:


Check for CMC DTC P0136, P0156, P0171, P0172, P0175, P1130 and P1150. Repair these adaptive fuel and HO2S codesCheck for any other CMC in memory. Repair these codes first!Ignore P1000 codes that set during KOEO and KOER Self-Test


Trouble Code: P0320

Ignition Engine Speed Input Circuit Malfunction

Possible Causes:


Inspect for problems with an Aftermarket 2-way radioInspect for signs of "arcing" at one or more of the ignition coilsInspect the Profile Ignition Pickup (PIP) unit inside distributor (check for damage or corrosion at the PIP sensor connector)PIP sensor is damaged or it has failed (distributor models)Ignition control module (ICM) has failed (Distributorless models)Trouble Code: P0340

Camshaft Position Sensor Circuit Malfunction

Possible Causes:


CMP sensor circuit is open or shorted to groundCMP sensor circuit is shorted to powerCMP sensor ground (return) circuit is openCMP sensor installation incorrect (Hall-effect type)CMP sensor is damaged or CMP sensor shielding damagedPCM has failedTSB 02-22-1 contains repair information for this trouble code

Nov 16, 2012 | Ford Cars & Trucks

1 Answer

I have a 2002 Jaguar X-type. The check engine light came on and it has been acting jumpy/shaky. I recently took it to be diagnosed and the codes I recieved back were P1314, P1316, P1111, and P0302..What do...


All fault codes can be checked out at http://www.bluejag.co.uk but here are the results for some of yours. You can ignor P1111. Looks like a faulty plug or coil pack cylinder 2

Fault Code:- P1314 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire rate catalyst damage -bank 2 NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- ECM Default:- Maximum engine speed reduced


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure
Fault Code:- P1316 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire excess emission NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure

Fault Code:-
P0302 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire detected ?€" cylinder 2

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.


Possible Fault:- Refer to P0300 Possible Causes

Aug 25, 2011 | 2002 Jaguar X-Type

2 Answers

Hi my 2006 cadillac cts has error codes po 300 303 305 343 347 368 392 and 496 can u tell me what they are or a website to find out thank u


P0300 is multiple engine misfire detected
P0303 is misfire in cylinder 3
P0305 is misfire in cylinder 5
P0343 is camshaft position sensor A (bank 1)
P0347 is camshaft position sensor A (bank 2)
P0368 is camshaft position sensor B (bank 1)
P0392 is camshaft position sensor B (bank2)
P0496 is EVAP Canister Purge System High Purge Flow

Jan 28, 2011 | 2006 Cadillac CTS

1 Answer

Crossfire misfire 4/5


DTC codes that will trigger P0304 Misfire Detected Cylinder #4 & P0305 Misfire Detected Cylinder #5.

Possible Causes:
- Improper spark plug at cylinder
- Insufficient compression at cylinder
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder
- Fuel injector may be faulty

Possible Solutions:
- Perform Injector Service
- Replace Spark Plug
- Replace Injector
- Replace Ignition Coil

Jan 17, 2011 | Chrysler Crossfire Cars & Trucks

1 Answer

2003 Hyundai Sonata with 4 cyl. PO301 error code. Have replaced spark plugs, wires, coil packs, and mass air flow sensor. Replaced air filter due to heavy gas smell. Car was starting after tapping gas 3...


P0301 - Cylinder 1 Misfire Detected.

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Being you have a heavy gas smell I would look into the injectors. If injector #1 is over producing it can cause a misfire. Test your compression and fuel pressure.

Jan 17, 2011 | Hyundai Sonata Cars & Trucks

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak

Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

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