BMW DTC P2104 – Throttle Actuator Control System – Forced Idle
DTC P2104 meaning on BMW
The Diagnostic Trouble Code (DTC) P2104 for BMW refers to an issue with the Throttle Actuator Control System, specifically indicating a Forced Idle condition. This means that the engine control module (ECM) has detected a problem with the throttle actuator control system that is causing the engine to be forced into an idle state.
BMW DTC P2104 symptoms
Symptoms of DTC P2104 on a BMW may include:
- Engine stalling at idle
- Reduced engine power
- Difficulty accelerating
- Check Engine Light illuminated
BMW DTC P2104 causes
Common causes of DTC P2104 on a BMW include:
- Throttle actuator malfunction
- Throttle position sensor issues
- Wiring or connector problems in the throttle actuator circuit
- Electronic throttle control module failure
BMW DTC P2104 seriousness
DTC P2104 should be taken seriously as it can lead to drivability issues and potential safety concerns. Ignoring this code may result in further damage to engine components and could leave the vehicle inoperable.
How to diagnose DTC P2104 on BMW
To diagnose DTC P2104 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the throttle actuator and related components for any visible damage or wear
- Check the throttle position sensor for proper operation
- Test the wiring and connectors in the throttle actuator circuit
How to fix DTC P2104 on BMW
To fix DTC P2104 on a BMW, the following steps may be taken:
- Replace the throttle actuator if it is found to be faulty
- Repair or replace any damaged wiring or connectors in the throttle actuator circuit
- Calibrate or replace the throttle position sensor if necessary
- Clear the fault codes and perform a test drive to ensure the issue is resolved
How to erase DTC P2104 on BMW
To erase DTC P2104 on a BMW, the fault codes can be cleared using a diagnostic scanner. After the repairs have been made and the issue resolved, the mechanic can use the scanner to clear the codes from the ECM’s memory. This will reset the Check Engine Light and allow the vehicle to operate normally.
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.