If you've been following our C4 project from the outset, you know that the past few years have seen the car make depressingly little progress toward its goal of achieving quarter-mile parity with its ...
The P2135 code indicates that the engine control module (ECM) has detected a mismatch between the voltage signals of Throttle Position Sensor (TPS) A and TPS B (image below). These dual sensors work ...
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