P2135 – BMW DTC

BMW DTC P2135 – Throttle/Pedal Position Sensor/Switch ‘A’ / ‘B’ Voltage Correlation

DTC P2135 meaning on BMW

The Diagnostic Trouble Code (DTC) P2135 for BMW indicates a voltage correlation issue between the throttle position sensor and the pedal position sensor. This code is specific to the throttle/pedal position sensor/switch ‘A’/’B’.

BMW DTC P2135 symptoms

Symptoms of DTC P2135 on a BMW may include:

• Reduced engine power
• Engine stalling
• Difficulty accelerating
• Check Engine Light (CEL) illuminated

BMW DTC P2135 causes

Common causes of DTC P2135 on a BMW include:

• Faulty throttle position sensor
• Malfunctioning pedal position sensor
• Wiring or connector issues
• Electronic control module (ECM) problems

BMW DTC P2135 seriousness

DTC P2135 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this code may result in further damage to engine components.

How to diagnose DTC P2135 on BMW

To diagnose DTC P2135 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the throttle position sensor and pedal position sensor for any visible damage
3. Check the wiring and connectors for any signs of wear or corrosion
4. Test the sensors using a multimeter to ensure they are functioning within specifications

How to fix DTC P2135 on BMW

To fix DTC P2135 on a BMW, you may need to:

1. Replace the faulty throttle position sensor or pedal position sensor
2. Repair any damaged wiring or connectors
3. Reset the Electronic Control Module (ECM) to clear the fault code
4. Perform a throttle body relearn procedure if necessary

How to erase DTC P2135 on BMW

To erase DTC P2135 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. Ensure that the underlying issue causing the fault code has been addressed before clearing it.

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.