Question about 2004 Pontiac Bonneville

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04 bonneville service engine soon is on how do i reset it?i have replace bad injectors and it just passes e-check (the old way)

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Best way to erase the codes causing the light to come on is with a scan tool or code reader.Alternatively you can disconnect the battery cables for a few minutes.This will erase codes but may also cause the vehicle to run poorly for a few minutes until the computer relearns values.If your radio has a theftlock it may require a code to be put in before it can be used again.

Posted on Jun 04, 2010

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2001 Bonneville! Several weeks ago, had trouble turning the key in the ignition - sometimes would turn, sometimes wouldn't. Then the Service Engine Soon light came on and the car stalled out a few times...


Service Engine Soon came back on and the car is again stalling ????? Did you have it checked for DTC'S - diagnostic trouble code's ? Service engine soon light on , codes will be present !

Apr 20, 2017 | 2001 Pontiac Bonneville

2 Answers

Have a 1998 dodge caravan with service engine soon light still on after fixing code 205 and 206. Tried to reset it but the light will not go off. I need to pass emissions soon. What do I need to do.


The symptoms for this code (both) will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated. The causes of a P0206 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

Your possible solutions, first, using a DVOM check the resistance of the injector. If it isn't within specs, then replace the injector.
* Check for voltage at the fuel injector connector. It should have 10 volts or more.
* Visually check the connector for damage or broken wires.
* Visually check the injector for damage.

Also, if you have access to an injector tester, activate the injector and see if it operates. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. If you do not have access to a tester, swap the injector with another one and see if the code changes. If the code changes, then change the injector.

At the PCM, remove the driver wire from the PCM connector and Ground the wire. (Make sure you have the correct wire. If you're not sure, do not attempt) The injector should activate
* Replace the injector

Hope helps.

Aug 08, 2011 | 2001 Dodge Caravan

1 Answer

1996 bonneville keeps missing what about MAP sensor ? MAS replaced Plugs replaced throotle posistion sensor also


have you isolated what cylinder is causing the misfire . You need to check the coils for proper spark at each plug. If you have spark then you will need to check each injector for proper fuel. you can do this by unplugging each injector one at a time to try to isolate which cylinder the missfire is on
or you can have your local parts store scan the car and tell you what code is stored . Most misfire with cause a service engine soon light to come on if the light is on then there is a code store .

Mar 06, 2011 | 1996 Pontiac Bonneville SE CA Value

2 Answers

Engine skipping when at an idle or at a steady running?


There are a few reasons this could happen. I would first check that you plug wires are on well. If they are I would check the plugs and replace if needed. let me know if that helps, if not let me know and I'll tell you a few other things to check

Oct 07, 2010 | 1996 Pontiac Bonneville SE CA Value

1 Answer

Service engine soon code 3rd. cyclinder miss


sorry but,,if u have a miss fire in #3 ,,that's coil or wire or plug or injector,,,dont know y they replaced the battery or alt unless they were bad??? hope it helps

May 24, 2010 | 2003 Lincoln LS

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Service engine soon light has been on for two weeks in a 2001 pontiac bonneville sle


Hi,read your car service manual,it will show you how to reset service engine light.
good luck!!!!!!!

Feb 24, 2010 | 2001 Pontiac Bonneville

1 Answer

Just had brake work and an oil change on my 2000 bonneville, and now the service engine soon light is on. could it just need to be reset?


Most Likely, yes. If there was a real problem, the "Check Engine" light would be on. This one is just a service interval reminder light.

Nov 20, 2009 | 2000 Pontiac Bonneville

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