Question about 1995 Chevrolet Beretta

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Received gm dtc 46 code for 1995 Chevy Beretta - Left Bank Fuel Imbalance from code reader. Intermittent miss. Sometimes care runs great. Other times get the miss or rough idle.

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  • Chevrolet Master
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Left Bank Fuel Imbalance, this is caused by dirty or cracked injectors.If the injectors are clogged, then it requires to be cleaned , if its cracked or worn out,m replace the injectors.The worn out out injectors are not letting the flow of fuel to run smoothly. But if injectors checked out, then clean the IAC , the idle air control valve, the fuel injector, the o2 sensors and throttle body.The IAC is located on throttle body.Clean both the IAC and throttle body with throttle cleaner.The throttle cleaner can be easily available at local auto parts stores.Clean this parts and check.this should help. Get the fuel pressure test done.If the fuel pressure tested low, then its faulty fuel pump causing the low fuel problem.It has to be replaced.-------- This should help.Thanks.Helpmech.

Posted on Mar 27, 2011

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P1626 , what’s the solution


Error Code P1626: Theft Deterrent Fuel Enable Signal Not Received

https://autoservicecosts.com/obd2-codes/p1626/
The VTD (Vehicle Theft Deterrent) system is included in the vehicle's BCM (Body Control Module). ... If the PCM detects a loss of state of the signal while the engine is running, then the Error Code P1626 will be set. ... Having this condition, the PCM will inhibit fuel delivery, disable ...

Crank no-start P1626: GM 4.3 Chevy Astro - YouTube

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https://www.youtube.com/watch?v=RjKblM4VH9E Feb 2, 2016 - Uploaded by Pine Hollow Auto Diagnostics
This 2003 Chevy Astro has an intermittent crank no-start, or a start-run-stall symptom, with a P1626 "Start ...

P1626 Chevrolet Theft Deterrent Fuel Enable Signal Not Received

https://www.engine-codes.com/p1626_chevrolet.html Possible Causes and Repair Information for P1626 Chevrolet code. Learn what does P1626 Chevrolet means? P1626 Chevrolet Theft Deterrent Fuel Enable Signal Not Received.

DTC P1626 Theft Deterrent Fuel Enable Signal Lost - LS2.com

https://www.ls2.com/boggs/dtcs/DTC%20P1626.htm The GAGE fuse open casues DTC P1626 to set. Refer to Wiring Repairs In Wiring Systems. If the engine starts and then stalls, the Body Control Module is not suppling the appropriate signal or the theft deterrent fuel enable circuit is open, shorted to a ground, or shorted to a voltage. Using the Freeze Frame and/or Failure ...

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www.3800pro.com > ... > Engine > DTC's, Problems & Troubleshooting Feb 24, 2006 - DTC P1626 Theft Deterrent Fuel Enable Signal Lost Circuit Description The Vehicle Theft Deterrent (VTD) system is incorporated within the body control module (BCM). The powertrain control module ( PCM ) monitors the state of health serial data message from the Theft Deterrent system to ensure that the ...

Apr 07, 2018 | Cars & Trucks

1 Answer

06 Cadillac STS V8 car has codes P0174 and P0420.


• DTC P0171 Fuel Trim System Lean Bank 1
• DTC P0174 Fuel Trim System Lean Bank 2
.
The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without oxygen sensor (O2S) input. During Closed Loop, the O2S inputs are added and used by the ECM to calculate short and long term fuel trim (FT) fuel delivery adjustments. If the O2S indicates a lean condition, FT values will be above 0 percent. If the O2S indicate a rich condition, FT values will be below 0 percent. Short term FT values change rapidly in response to the heated oxygen sensor (HO2S) voltage signals. Long term FT makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1. If the ECM detects an excessively lean condition, DTC P0171 or P0174 sets.
Diagnostic Aids
• Excessive resistance in the fuel injector ignition 1 voltage circuit or the fuel injector control circuit may cause the following symptoms:
- Lean condition
- Misfire
- Rough idle
• The system will go lean if an injector is not suppling enough fuel.
• A lean condition could be present during high fuel demand.
• A malfunctioning MAF sensor can cause this DTC to set. Refer to DTC P0101 .
• Review the Failure Records with a scan. If an intermittent condition is suspected, refer to Intermittent Conditions .

DTC Descriptors
This diagnostic procedure supports the following DTCs:
• DTC P0420 Catalyst System Low Efficiency Bank 1
• DTC P0430 Catalyst System Low Efficiency Bank 2

This code could mean the catalytic converter on that bank has failed .

Causes of lean condition trouble codes P0171 P0174 GM 5 3L

P0420 P0430 catalytic converter catalyst inefficiency code diagnosis

Mar 28, 2018 | 2006 Cadillac STS

1 Answer

03 jeep liberty 3.7 intermittent random multiple missfires with codes. Po3xx. All over the board with no particular pattern.


with scan tool values go as such... when running good left and right bank inj 3.8 ms when braking up l@38 r@0..

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1 Answer

Vehicle CEL is on, various codes


P0300 is a random miss fire , a vacuum leak can cause this as well as low fuel pressure ! weak fuel pump , clogged fuel filter !
DTC P0171: Fuel Trim System Lean Bank 1
DTC P0174: Fuel Trim System Lean Bank 2 These two codes are saying the PCM - engine computer is see a lean condition .
DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control module (FPCM) monitors the voltage signal from the fuel pressure sensor.

You don't say what make , model an year vehicle ! These are for GM vehicles , yours could mean something else . Except the first three , those are genaric codes , same for all makes ! So can't say what this codes are P2097, and P2099 ! Can't mean this P2097 - Post Catalyst Fuel Trim System Too Rich Bank 1
P2099 - Post Catalyst Fuel Trim System Too Rich Bank 2

Sep 03, 2016 | Cars & Trucks

1 Answer

I have an 08 Saturn Astra XR. It won't come out of 1st. Throwing code p2096 post catalyst fuel trim system too lean bank 1. Put on new o2 sensor on both streams and I cleaned out mass air flow. Help?


That code wouldn't cause it not to come out of first gear . How did you retrieve this code P2096 , code reader etc.. This is an invalid code , not listed in Saturn service information . Have DTC'S check by a GM dealer , Chevy . You obviously have a transmission problem not an O2 sensor problem . Some code readers will replace a code with an other if it doesn't have the right one . Software .

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1 Answer

CODE CO441, P0172, P1174


DTC P0172: Fuel Trim System Rich
DTC P1174: Air Fuel Imbalance Bank 1
Your best bet is to take it to a ASE certified repair shop or dealer < It's going to take special diagnostic tools to trouble shoot an fix this problem .

Jan 06, 2016 | 2008 Chevrolet Uplander

2 Answers

1995 suburban 5.7 suddenly developed an intermittent miss and now uses a lot of fuel. When it is not missing it runs great, but whether I'm accelerating or sitting at a light it will run great and the


Usually if there is no engine light it means that the problem is more likely a mechanical one. Where the problem is intermittent and when it occurs, there is an increase in fuel consumption, I believe the component will be related to air/fuel ratio. There are some common failures for this symptom, I will list some: (in the head) a weak valve spring or a bent or sticking valve, a dirty or loose cap and rotor, coil wire or spark plug wire shorting to ground, sticking or defective EGR valve, clogged air or fuel filter, excessive exhaust back pressure, or a weak or leaking fuel regulator. These are my suggestions. As always you will need to run some tests and inspect as much as you can. The more you find whether it is good or not, the more you will know. With this new information, it will get you even closer to the cause. Please let me know if you have other questions and any progress that you are making, good luck.

Mar 15, 2014 | 1995 Chevrolet Suburban

1 Answer

P0455 code on 2006 Chevy 4WD 5.3 liter


Trouble Code: P0455

Evaporative Emission (EVAP) System Large Leak Detected

Possible Causes:


A fuel fill cap that is left OFF after a fuel fill will cause this DTC to set.A loose, missing, or damaged fuel fill cap can cause this DTC to set.A blockage or restriction in the EVAP purge solenoid, purge pipe EVAP canister, or vapor pipe, can cause this DTC to set.A temporary blockage in the EVAP purge solenoid, purge pipe, or EVAP canister could cause an intermittent condition. Inspect and repair any restriction in the EVAP system.To help locate intermittent leaks, use the J 41413-200 to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the J 41413-SPT .To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT .Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.

Jan 30, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 1997 Chevy Blazer with the 4.3 engine. The Service Engine light keeps coming on. I scanned the codes and replaced the O2 sensor just before the catalytic converter. The light is still coming on...


P0146 pd means pending code
Pending codes and DTCs? Posted on November 12, 2010 by fcrmaster
When reading codes from your vehicle the fault code reader may show them as pending codes or normal Diagnostic Trouble Codes (DTC).
Pending codes (also known as continuous monitor codes) will be registered when an intermittent fault occurs. If that fault does not happen again after x number of start/stop cycles, the ECU will erase the code from memory. If the fault is persistent it becomes a DTC.
If you have read pending codes it is advisable to check the codes again after a week or so. If there is no apparent problem with the vehicle it is safe to erase the codes too and check back. But always make a note of any fault codes with the date and mileage of a vehicle.
If the codes read include a DTC then you need to investigate further. This you can either do yourself or advise your garage. If, again, you don't see an apparent problem (depending n the severity of the code) with the vehicle you can note the codes down and erase them. Then check again after a week or a few days depending on how often the vehicle gets used. If a repair has been made (previous owner) the DTC may just not have been reset after the repair.
The other numbers behind the code 01/06 , 02/06, 03/06 , 05/06 ,04/06 These don't mean anything . cheap code reader .
DTC P0140 HO2S Circuit Insufficient Activity Sensor 2
DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
DTC P0171 Fuel Trim System Lean Bank 1
DTC P0174 Fuel Trim System Lean Bank 2
Sorry but this is something you should take to a qualified repair shop that has a diagnostic tool that can view sensor scan data.
Causes of lean condition trouble codes P0171 P0174 GM 5 3L

Jul 23, 2017 | 1999 Chevrolet Camaro

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