Powertrain warning light and cylinders one, three and five are misfiring

BOA69

MEMBER
2006 HOLDEN COMMODORE
3.6L
V6
RWD
AUTOMATIC
155,964,169 MILES

It is registering the following FAULT codes on a OBD Diagnostic Computer: P2237 - P0300 - P0301 - P0303 - P0305 - P1632. When starting the engine the "check power-train" warning light comes up on dash and the car runs very very rough and blows a lot of white smoke. There is also a strong smell of un-burnt fuel and exhaust gases inside the car itself and I noticed a clear liquid dripping out of the exhaust which smells very much like fuel. The fuel economy has been terrible for quite some time now.

7 Replies

BOA69

MEMBER
34 POSTS

I forgot to mention the first code of P2271 in my post. Below are the descriptions that the diagnosis computer is showing for the faults:

P2271 = O2 Senser 2 Stuck Rich Bank 1
P2237 = O2 Senser 1 Pumping Current Control Circuit Bank 1
P0300 = Random/Multiple Cylinder Misfire Detected
P0301 = Cylinder 1 Misfire Detected
P0303 = Cylinder 3 Misfire Detected
P0305 = Cylinder 5 Misfire Detected
P1632 = Immobiliser Transponder Response Distorted

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Thursday, August 11th, 2016 AT 6:13 PM

BOA69

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34 POSTS

Can anybody help me out with some information on this problem please. It is really got me stumped and I do not know where to start.

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Friday, August 12th, 2016 AT 6:03 AM

KEN L

MASTER CERTIFIED MECHANIC
47,349 POSTS

Hello,

It sounds like you have a blown head gasket, please remove the spark plugs and crank the engine over to look for coolant, here are a couple guides to help you.

https://www.2carpros.com/articles/head-gasket-blown-test

and

https://www.2carpros.com/articles/how-to-test-engine-compression

Let me know what you find.

Best, Ken

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Friday, August 12th, 2016 AT 12:05 PM

BOA69