Check engine light on, misfire and injector codes

Check engine light on, misfire and injector codes

GM has issued a PIP bulletin #PIP4924D to address a check engine light on, misfire codes, injector codes on the following vehicles:

2009 Buick Allure (Canada)

2009-2014 Buick Enclave

2009-2014 Buick Lacrosse

2013-2014 Cadillac ATS

2010-2014 Cadillac CTS

2009-2014 Cadillac SRX

2009-2011 Cadillac STS

2013-2014 Cadillac XTS

2010-2014 Chevrolet Camaro

2010-2014 Chevrolet Equinox

2012-2014 Chevrolet Impala

2009-2014 Chevrolet Traverse

2009-2014 GMC Acadia

2010-2014 GMC Terrain

2009-2010 Saturn Outlook

2009-2010 Saturn Vue with 2.8 LAU, 3.0L LF1, LFW and 3.6L LLT, LFX engines

GM reports that the issue will turn on the service engine soon light (also called a check engine light) along with any of these injector codes:

P0201       Injector Circuit Malfunction – Cylinder 1

P0202       Injector Circuit Malfunction – Cylinder 2

P0203       Injector Circuit Malfunction – Cylinder 3

P0204       Injector Circuit Malfunction – Cylinder 4

P0205       Injector Circuit Malfunction – Cylinder 5

P0206       Injector Circuit Malfunction – Cylinder 6

P0261       Cylinder 1 Injector Circuit Low

P0262       Cylinder 1 Injector Circuit High

P0263       Cylinder 1 Contribution/Balance Fault

P0264       Cylinder 2 Injector Circuit Low

P0265       Cylinder 2 Injector Circuit High

P2146 Injector Positive Voltage Control Circuit Group 1

P2149 Injector Positive Voltage Control Circuit Group 2

P2152 Injector Positive Voltage Control Circuit Group 3

P2155 Injector Positive Voltage Control Circuit Group 4

P216A Injector Positive Voltage Control Circuit Group 5

P216D Injector Positive Voltage Control Circuit Group 6

, check for any of these codes. Then follow the advice contained in the service bulletin.

GM has determined that the fuel injector wiring harness may be causing the problems. GM recommends inspecting the wiring harness for rub through or internal wire opens. GM has found the wiring harness may rub through or cause internal wire damage in some common spots like where the harness routes against the intake plenum, at valve cover bolts, against the fuel line and on the side of the head under the plenum.

©, 2015 Rick Muscoplat