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O4 DURAMAX CODE DTC #04 P0302 - Silverado 2500HD Chevrolet Cars & Trucks

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SOURCE: O4 DODGE DURANGO.. CODE PULLS UP MANUFACTURE

it means you reader does not decode the codes for you! you must look it up on the internet or ask the dealer! good luck!

Posted on Sep 08, 2009

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I have a 04 sebring touring with flashing engine light. Code says #2 misfire. Replaced the fuel injector and coils but still runs ragged. What next?


Kimberly, Change the spark plug, if you have not done so. Check the links below for a long list of what could cause misfire.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

http://www.obd-codes.com/p0302
P0302 OBD II Trouble Code
Diagnose Engine Misfire

Jun 01, 2016 | 2004 Chrysler Sebring

2 Answers

What are the probable causes of DTCs P0400, P0171, P0174 y P0302?


DTC code PO400 could be caused by a clogged EGR valve or EGR tube. try cleaning the EGR valve, tube
DTC code PO171 is fuel system too lean bank 1
DTC code PO174 is fuel system too lean Bank 2
Most likely suspects are O2 sensors, But can be caused by vacuum leaks and also can be Mass airflow sensor (MAF) try cleaning with electrical parts cleaner
DTC code PO 302 is a misfire at cylinder # 2
Check spark plugs and wires
Try cleaning the EGR Valve first along with changing the spark plug first, and see if any codes erase, in other words start with the cheaper fixes first, as some problems can be causing the other other codes

Sep 18, 2015 | Cars & Trucks

3 Answers

DTC P0302 code


The probable causes for DTC 0302 include:
1. Control unit software in need of updating
2. Faulty PCM ore ECM
3. Faulty fuel injector
4. Ignition system fault. Check ignition module, coil, spark plugs and wires. Have you checked/replaced all of these?
5. Fuel system problem

No doubt the last thing you check will be the problem. I checked for pertinent FSBs but found none.

Apr 28, 2014 | 2008 Dodge Durango

1 Answer

Where is the decelaration senser for the a.b.s. o4 tacoma 4x4


Diagnostic Test Code (DTC) C1244 is a "maufacturer-specific" code used by Toyota for this vehicle. Toyta defines this code simply as "DECELERATION SENSOR CIRCUIT."

Possible causes are:
> Faulty ABS deceleration sensor
> Open or short in deceleration sensor circuit
> Defective wiring harness or connectors

The deceleration sensor for your 2004 Toyota Tacoma is located under the passenger seat.

Jun 15, 2012 | 2004 Toyota Tacoma

1 Answer

Code's 202 and 302


Both fault codes walk together, the first generated the second...

DTC P0202 - Cylinder 2 Injector Circuit Malfunction
P0202 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0202 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM


DTC P0302 Code - Cylinder #2 Misfire
A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

A code P0302 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer


If need additional details, just contact us clicking the links. Hope this helps.

Oct 13, 2011 | 2002 Chrysler Town & Country

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

1 Answer

I have a dtc code 302 for a 2000 ford focus


P0302 Indicates engine management has detected a misfire on cylinder number 2. Most often the cause of this on these vehicles is a coil or a sparkplug boot.

Dec 15, 2010 | 2000 Ford Focus

1 Answer

O4 DODGE DURANGO.. CODE PULLS UP MANUFACTURE SPECIFIC DTC ... WHAT IS THIS??


it means you reader does not decode the codes for you! you must look it up on the internet or ask the dealer! good luck!

Sep 08, 2009 | 2004 Dodge Durango

1 Answer

2001 mitsubishi galant,2.4L eng. Getting DTC 421. Is this code related to the catalytic converter? Check eng. light always on, also DTC 302 showing.


DTC code P0421 is the O2 sensor that indicates a an issue with the Catalytic Converter. Replace the O2 sensor to the Catalytic Converter "the one after Converter" It's common for the sensor to fail and you can pick one up from Auto Zone and they will have the step by step instructions to replacing the O2 sensor. 
DTC code P0302 Indicates a misfire on cylinder #2. Address the spark plug, spark plug wire, and injector. Look for any damages and try running some fuel injector cleaner through the fuel system to clean out the injectors. 
Good luck and hope this helps. 

Aug 11, 2009 | 2001 Mitsubishi Galant

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