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VW 2003 Jetta 2.0 Fault Codes P2128 and P2133 - Sensor or Wiring Issue?

Model: 2.0 Jetta Fault Code: P2128 Posted: 2014-09-01 16:21

I'm experiencing fault codes P2128 and P2133 on my 2003 Volkswagen Jetta 2.0L engine. I've already replaced the throttle position sensor, but the issue persists. The vehicle still doesn't respond properly to throttle input. Does this require a PCM reset using an OBD2 scanner? What steps should I take next to diagnose the root cause?

Related fault codes

P2128P2133

Comments (1)

Anonymous 2014-09-02 15:44

Codes P2128 and P2133 are most likely related to circuit issues—such as wiring faults or voltage problems. A live data scan using an OBD2 scanner is recommended to check exactly what the Powertrain Control Module (PCM) is detecting in real time, which can help pinpoint whether the issue lies in sensor signals or electrical connections.