P0121 Diagnostic Trouble Code Discussion for July 2010
Throttle Position Sensor Does Not Agree With MAP
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| Help Request | Posted | |
| 2004 Mercury Mountaineer 4.6L Poor Idle Quality, MIL Lamp on VIN: 4M2DU86W44 P0121: ECT throttle position sensor circuit. vehicle came in with no gas pedal response "check engine" & wrench light on - has same codes & same problem as previously repaired for but now no 5volt reference to TPS or APP sensors. checked all powers & grounds to PCM & also resistan... |
July 28, 2010 |
