BMW DTC P1243 – Throttle/Pedal Position Sensor/Switch ‘B’ Circuit High (Bank 2)
DTC P1243 meaning on BMW
The Diagnostic Trouble Code (DTC) P1243 for BMW indicates an issue with the Throttle/Pedal Position Sensor/Switch ‘B’ Circuit High on Bank 2. This means that the signal from the throttle or pedal position sensor on the second bank of the engine is reading higher than the expected range.
BMW DTC P1243 symptoms
Symptoms of DTC P1243 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine power
- Engine hesitation or stalling
- Difficulty accelerating
BMW DTC P1243 causes
Common causes of DTC P1243 on a BMW include:
- Faulty throttle or pedal position sensor
- Wiring or connector issues in the sensor circuit
- Electronic control module (ECM) malfunction
BMW DTC P1243 seriousness
DTC P1243 should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this code may result in poor engine performance and reduced fuel efficiency.
How to diagnose DTC P1243 on BMW
To diagnose DTC P1243 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes.
- Inspect the throttle and pedal position sensors for any visible damage or wear.
- Check the wiring and connectors for any signs of corrosion or disconnection.
- Perform a sensor calibration or reset if necessary.
How to fix DTC P1243 on BMW
To fix DTC P1243 on a BMW, you can try the following:
- Replace the faulty throttle or pedal position sensor.
- Repair any damaged wiring or connectors in the sensor circuit.
- If the ECM is faulty, consider replacing or reprogramming it.
How to erase DTC P1243 on BMW
To erase DTC P1243 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM memory. Once the issue has been addressed and fixed, you can reset the codes to turn off the Check Engine Light.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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