P168A – BMW DTC

BMW DTC P168A – Throttle Position Output Circuit/Open (Bank 2)

DTC P168A meaning on BMW

The Diagnostic Trouble Code (DTC) P168A for BMW indicates a fault in the Throttle Position Output Circuit/Open for Bank 2. This means that the Engine Control Module (ECM) has detected an open circuit or a lack of signal from the throttle position sensor in Bank 2 of the vehicle.

BMW DTC P168A symptoms

Symptoms of DTC P168A on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance or power
• Engine stalling or hesitation
• Difficulty accelerating smoothly

BMW DTC P168A causes

Common causes of DTC P168A on a BMW include:

• Faulty throttle position sensor
• Open or short circuit in the throttle position sensor wiring
• Corrosion or poor connections in the sensor circuit
• ECM software or hardware issues

BMW DTC P168A seriousness

DTC P168A should not be ignored as it can lead to drivability issues and potential engine damage if left unresolved. It is recommended to address this fault promptly to ensure the proper functioning of the vehicle.

How to diagnose DTC P168A on BMW

To diagnose DTC P168A on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the throttle position sensor and its wiring for any visible damage or corrosion
3. Test the throttle position sensor using a multimeter to check for proper voltage and resistance
4. Check for any loose or disconnected connections in the sensor circuit
5. Perform a thorough visual inspection of the sensor and surrounding components

How to fix DTC P168A on BMW

To fix DTC P168A on a BMW, the following steps may be taken:

1. Replace the faulty throttle position sensor if it is determined to be the cause of the fault
2. Repair any open or short circuits in the sensor wiring
3. Clean or repair any corroded connections in the sensor circuit
4. Reset the ECM and clear the fault code after completing the repairs
5. Perform a test drive to ensure the issue has been resolved

How to erase DTC P168A on BMW

To erase DTC P168A on a BMW, follow these steps:

1. Use a diagnostic scanner to access the ECM and clear the fault code
2. Ensure that the underlying issue causing the fault code has been addressed
3. Perform a test drive to confirm that the fault code does not return

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.