BMW DTC P156D – Throttle Valve Enable Line Circuit Low (Bank 1)
DTC P156D meaning on BMW
The DTC P156D error code on a BMW indicates an issue with the Throttle Valve Enable Line Circuit Low in Bank 1. This means that there is a problem with the electrical circuit that controls the throttle valve in the engine, specifically on the first bank of cylinders.
BMW DTC P156D symptoms
Symptoms of the DTC P156D error code on a BMW may include:
- Reduced engine power
- Engine stalling
- Difficulty accelerating
- Check Engine Light illuminated
BMW DTC P156D causes
Common causes of the DTC P156D error code on a BMW include:
- Faulty throttle valve position sensor
- Wiring issues in the throttle valve enable line circuit
- Corrosion or poor connections in the circuit
- Defective throttle valve actuator
BMW DTC P156D seriousness
The DTC P156D error code should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. It is recommended to diagnose and fix the issue as soon as possible.
How to diagnose DTC P156D on BMW
To diagnose the DTC P156D error code on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the throttle valve position sensor and wiring for any visible damage
- Check the throttle valve actuator for proper operation
- Test the throttle valve enable line circuit for continuity and voltage
How to fix DTC P156D on BMW
To fix the DTC P156D error code on a BMW, you can try the following solutions:
- Replace the faulty throttle valve position sensor
- Repair any damaged wiring in the throttle valve enable line circuit
- Clean or replace corroded connectors in the circuit
- Replace the defective throttle valve actuator if necessary
How to erase DTC P156D on BMW
To erase the DTC P156D error code on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. Once the issue has been fixed and the codes cleared, the Check Engine Light should turn off.
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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