P1238 Diagnostic Trouble Code Discussion for August 2015
Fuel Injector 6 Output Circuit Malfunction
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| Help Request | Posted | |
| 2008 GMC Sierra 1500 WT 4.8L MIL Lamp on, Engine power reducti VIN: 1GTEC14C08 P1238: Accelerator pedal sensor 1-2 correlation. Working on p2138 code. At an idle recieve voltage readings of app-1 .85v and on app-2 .44v. As the accerelator pedal is swept readings fall off on app-1 from a 50% corelation. I back probed circut 1161 at pin #29 pcm and recieved the same reading as backprobin... |
August 19, 2015 |
