BMW DTC P3191 – Throttle Actuator Control Motor Circuit/Open (Bank 2)
DTC P3191 meaning on BMW
DTC P3191 on a BMW indicates an issue with the Throttle Actuator Control Motor Circuit/Open in Bank 2. This fault code is specific to BMW vehicles and points to a problem with the throttle actuator control motor circuit on the second bank of cylinders.
BMW DTC P3191 symptoms
Symptoms of DTC P3191 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine power
- Engine stalling or hesitation
- Difficulty accelerating
BMW DTC P3191 causes
Common causes of DTC P3191 on a BMW include:
- Faulty throttle actuator control motor
- Open or short circuit in the motor wiring
- Corrosion or poor connections in the circuit
- Defective throttle position sensor
BMW DTC P3191 seriousness
DTC P3191 should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this fault code may result in unsafe driving conditions and further complications.
How to diagnose DTC P3191 on BMW
To diagnose DTC P3191 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the throttle actuator control motor and wiring for any visible damage
- Test the throttle position sensor for proper operation
- Check for continuity and resistance in the motor circuit
How to fix DTC P3191 on BMW
To fix DTC P3191 on a BMW, the following steps may be taken:
- Replace the faulty throttle actuator control motor
- Repair any open or short circuits in the motor wiring
- Clean or repair corroded connections in the circuit
- Replace the throttle position sensor if necessary
How to erase DTC P3191 on BMW
To erase DTC P3191 on a BMW, a diagnostic scanner can be used to clear the fault code from the vehicle’s computer system. After addressing the underlying issue causing the fault code, the code can be cleared to reset the Check Engine Light.
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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