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P167B – BMW DTC

BMW DTC P167B – Throttle Heating Relay Circuit High

DTC P167B meaning on BMW

DTC P167B indicates a fault in the Throttle Heating Relay Circuit on a BMW vehicle. This fault code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the circuit that controls the throttle heating relay.

BMW DTC P167B symptoms

Symptoms of DTC P167B on a BMW may include:

  • Check Engine Light illuminated
  • Reduced engine performance
  • Throttle response issues

BMW DTC P167B causes

Common causes of DTC P167B on a BMW include:

  • Faulty throttle heating relay
  • Short circuit or open circuit in the relay circuit
  • ECM software issues

BMW DTC P167B seriousness

While DTC P167B may not cause immediate drivability issues, it is important to address this fault to prevent potential long-term damage to the engine or other components. Ignoring this fault code could lead to further complications and increased repair costs.

How to diagnose DTC P167B on BMW

To diagnose DTC P167B on a BMW, you can follow these steps:

  1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
  2. Inspect the throttle heating relay and its wiring for any visible damage
  3. Test the relay for proper operation using a multimeter
  4. Check for any loose connections or corrosion in the relay circuit

How to fix DTC P167B on BMW

To fix DTC P167B on a BMW, you can try the following:

  1. Replace the faulty throttle heating relay
  2. Repair any damaged wiring or connectors in the relay circuit
  3. Update the ECM software to the latest version

How to erase DTC P167B on BMW

To erase DTC P167B on a BMW, you can clear the fault code using a diagnostic scanner. After addressing the underlying issue that caused the fault code, you can reset the ECM and clear the code to turn off 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

← All BMW Diagnostic Trouble Codes

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