BMW DTC P155D – Throttle Actuator Monitoring Incorrect Actual Value (Bank 2)
DTC P155D meaning on BMW
The DTC P155D error code on a BMW indicates an issue with the Throttle Actuator Monitoring system on Bank 2. This means that the actual value being monitored by the throttle actuator does not match the expected value, leading to a discrepancy that triggers the diagnostic trouble code.
BMW DTC P155D symptoms
Symptoms of the DTC P155D error code on a BMW may include:
- Reduced engine performance
- Engine stalling or hesitation
- Check Engine Light (CEL) illuminated on the dashboard
- Difficulty accelerating smoothly
BMW DTC P155D causes
Common causes of the DTC P155D error code on a BMW include:
- Faulty throttle actuator
- Wiring or connection issues in the throttle actuator system
- Software or programming issues
BMW DTC P155D seriousness
The DTC P155D error code should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this code may result in further complications and increased repair costs over time.
How to diagnose DTC P155D on BMW
To diagnose the DTC P155D error code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the specific fault codes
- Inspect the throttle actuator and related components for any visible damage or wear
- Check the wiring and connections for any signs of corrosion or disconnection
- Perform a throttle actuator adaptation or calibration procedure
How to fix DTC P155D on BMW
To fix the DTC P155D error code on a BMW, the following steps may be taken:
- Replace the faulty throttle actuator if necessary
- Repair any damaged wiring or connections in the throttle actuator system
- Update the software or programming related to the throttle actuator system
- Perform a throttle actuator adaptation or calibration procedure
How to erase DTC P155D on BMW
To erase the DTC P155D error code on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light and ensure that the problem has been resolved.
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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