P1221 Diagnostic Trouble Code Discussion for August 2007
TP Sensor 2 Signal Correlation
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| Help Request | Posted | |
| 2002 GMC Envoy SLE 4.2L MIL Lamp on, Power Loss VIN: 1GKDT13S22 P1221: TP Sensor 2 Circuit Malfunction. ... Engine Power lights on. Scanned and found code P1221. Followed the GM flowchart and diagnosed bad throttle body. Replaced with new GM part. Initially, it seemed as if vehicle was fixed (lights stayed out and vehicle drove good for 1/2 hour). When customer ... |
August 28, 2007 | |
| 2002 GMC Envoy SLE 4.2L MIL Lamp on, Power Loss VIN: 1GKDT13S22 P1221: TP Sensor 2 Circuit Malfunction. ... Engine Power lights on. Scanned and found code P1221. Followed the GM flowchart and diagnosed bad throttle body. Replaced with new GM part. Initially, it seemed as if vehicle was fixed (lights stayed out and vehicle drove good for 1/2 hour). When customer ... |
August 29, 2007 |
