P167C – BMW DTC

BMW DTC P167C – Throttle Heating Relay Circuit Low

DTC P167C meaning on BMW

DTC P167C on a BMW refers to the Throttle Heating Relay Circuit Low. This diagnostic trouble code indicates that the engine control module (ECM) has detected a low voltage condition in the circuit responsible for controlling the throttle heating relay.

BMW DTC P167C symptoms

Symptoms of DTC P167C on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Throttle response issues
• Possible stalling or rough idling

BMW DTC P167C causes

Common causes of DTC P167C on a BMW include:

• Faulty throttle heating relay
• Wiring or connection issues in the throttle heating relay circuit
• Defective engine control module (ECM)

BMW DTC P167C seriousness

While DTC P167C may not always result in immediate drivability issues, it is important to address this code promptly to prevent potential long-term damage to the vehicle’s engine and emissions system.

How to diagnose DTC P167C on BMW

To diagnose DTC P167C on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
2. Inspect the throttle heating relay and its wiring for any visible damage or corrosion.
3. Test the throttle heating relay for proper operation using a multimeter.
4. Check the ECM for any signs of malfunction or communication errors.

How to fix DTC P167C on BMW

To fix DTC P167C on a BMW, you can try the following:

1. Replace the faulty throttle heating relay if it is found to be defective.
2. Repair any damaged wiring or connections in the throttle heating relay circuit.
3. If the ECM is determined to be faulty, consider replacing or reprogramming it.

How to erase DTC P167C on BMW

To erase DTC P167C on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM. After addressing the underlying issue causing the code, clearing the codes should reset the Check Engine Light and remove the DTC from the system.

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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