BMW DTC P155C – Throttle Actuator Monitoring Dissimilar Desired Values (Bank 2)
DTC P155C meaning on BMW
The DTC P155C on a BMW indicates an issue with the Throttle Actuator Monitoring system on Bank 2. This fault code specifically points to dissimilar desired values being detected by the engine control module in relation to the throttle actuator on Bank 2.
BMW DTC P155C symptoms
Symptoms of the DTC P155C on a BMW may include:
- Check Engine Light illuminated
- Reduced engine power
- Unresponsive throttle
- Engine stalling
BMW DTC P155C causes
Common causes of the DTC P155C on a BMW include:
- Throttle actuator failure
- Wiring or connector issues
- Software glitches in the engine control module
BMW DTC P155C seriousness
The DTC P155C should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this fault code may result in further damage to engine components.
How to diagnose DTC P155C on BMW
To diagnose the DTC P155C on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the throttle actuator and related components for any visible damage or wear
- Check the wiring and connectors for any signs of corrosion or disconnection
- Perform a throttle actuator test using diagnostic equipment
How to fix DTC P155C on BMW
To fix the DTC P155C on a BMW, the following steps may be taken:
- Replace the faulty throttle actuator if necessary
- Repair any damaged wiring or connectors
- Update the engine control module software if applicable
- Clear the fault code and perform a test drive to ensure the issue is resolved
How to erase DTC P155C on BMW
To erase the DTC P155C on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been completed, the mechanic can access the DTC menu on the scanner and select the option to clear the code. Once cleared, the Check Engine Light should turn off, indicating that the fault code has been successfully erased.
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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