Audi DTC P1861 – Throttle Position (TP) sensor Error Message from ECM
DTC P1861 meaning on Audi
The Diagnostic Trouble Code (DTC) P1861 for Audi indicates a fault with the Throttle Position (TP) sensor. The TP sensor is responsible for monitoring the position of the throttle valve and sending this information to the Engine Control Module (ECM) to adjust fuel delivery and engine performance accordingly.
Audi DTC P1861 symptoms
Common symptoms associated with DTC P1861 on an Audi may include:
- Reduced engine power
- Poor acceleration
- Stalling or rough idling
- Check Engine Light (CEL) illuminated on the dashboard
Audi DTC P1861 causes
The potential causes of DTC P1861 on an Audi can include:
- Faulty Throttle Position (TP) sensor
- Wiring or connector issues in the TP sensor circuit
- ECM software or hardware problems
Audi DTC P1861 seriousness
Ignoring or neglecting DTC P1861 on an Audi can lead to poor engine performance, reduced fuel efficiency, and potential safety hazards. It is important to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P1861 on Audi
To diagnose DTC P1861 on an Audi, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the TP sensor and its wiring for any visible damage
- Test the TP sensor’s voltage and resistance values
- Check for any ECM-related issues
How to fix DTC P1861 on Audi
Depending on the root cause, fixing DTC P1861 on an Audi may involve:
- Replacing the faulty Throttle Position (TP) sensor
- Repairing or replacing damaged wiring or connectors
- Updating or reprogramming the ECM software
How to erase DTC P1861 on Audi
After addressing the underlying issue causing DTC P1861 on an Audi, the fault code can be cleared from the ECM using a diagnostic scanner. This process typically involves accessing the ECM’s menu, selecting the option to clear codes, and confirming the action.