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P1631 – BMW DTC

BMW DTC P1631 – Throttle Valve Actuator Spring Test (Bank 1)

DTC P1631 meaning on BMW

DTC P1631 on a BMW indicates an issue with the Throttle Valve Actuator Spring Test for Bank 1. This fault code is specific to BMW vehicles and relates to a problem with the throttle valve actuator spring in the engine’s intake system.

BMW DTC P1631 symptoms

Symptoms of DTC P1631 on a BMW may include:

  • Engine hesitation or stalling
  • Reduced engine power
  • Check Engine Light (CEL) illuminated on the dashboard
  • Poor acceleration

BMW DTC P1631 causes

The common causes of DTC P1631 on a BMW include:

  • Defective throttle valve actuator spring
  • Wiring issues in the throttle valve actuator circuit
  • Faulty throttle position sensor

BMW DTC P1631 seriousness

DTC P1631 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 poor engine performance and increased fuel consumption.

How to diagnose DTC P1631 on BMW

To diagnose DTC P1631 on a BMW, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault code
  2. Inspect the throttle valve actuator spring for any signs of damage or wear
  3. Check the wiring and connectors in the throttle valve actuator circuit
  4. Test the throttle position sensor for proper operation

How to fix DTC P1631 on BMW

To fix DTC P1631 on a BMW, you can:

  1. Replace the faulty throttle valve actuator spring
  2. Repair any damaged wiring or connectors in the throttle valve actuator circuit
  3. Replace the throttle position sensor if necessary

How to erase DTC P1631 on BMW

To erase DTC P1631 on a BMW, you can:

  1. Use a diagnostic scanner to clear the fault code
  2. After fixing the underlying issue, reset the Check Engine Light by clearing the fault code

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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