P1221 Diagnostic Trouble Code Discussion for February 2015
TP Sensor 2 Signal Correlation
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| Help Request | Posted | |
| 2001 GMC Yukon XL 1500 Denali 6.0L MIL Lamp on VIN: 1GKFK66U61 P1221: TP Sensor 2 Signal Correlation. most of the time fault sets on cold start up but have gotten it to fail on decel at highway speed inspected wiring from tps to tac module. Issue occured after lower intake gasket repair |
February 24, 2015 | |
| 2001 GMC Yukon XL 1500 Denali 6.0L MIL Lamp on VIN: 1GKFK66U61 P1221: TP Sensor 2 Signal Correlation. most of the time fault sets on cold start up but have gotten it to fail on decel at highway speed inspected wiring from tps to tac module. Issue occured after lower intake gasket repair |
February 27, 2015 |
