2013 Skoda Sirocco P0121 Error Code: TPS Sensor or Wiring Issue Diagnosis
Hello everyone, I'm looking for clarification on the meaning of the P0121 error code in my 2013 Sirocco BlueMotion diesel (13 plate). The code indicates a 'TPS/Pedal Position Sensor Circuit Range/Performance' fault. I've searched online, but found limited information specifically about this code on the 2013 Sirocco model. Can anyone explain what this error means and where to start troubleshooting? Thanks in advance for any insights or guidance.
The P0121 code typically indicates one or more of the following issues: the Throttle Position Sensor (TPS) has an intermittent open or short circuit, the wiring harness is rubbing and causing a break or short, there's a poor connection at the TPS sensor, or in rare cases, the Powertrain Control Module (PCM) may be faulty. Corrosion or moisture inside the connector or sensor can also trigger this error. For troubleshooting, it's recommended to perform an ohms test on the wiring and connections, inspect for physical damage, and ensure all terminals are securely connected. If necessary, replace the TPS sensor with a known good unit. More details: https://www.autozone.com/p0121-error-code-explanation