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P0986 – BMW DTC

BMW DTC P0986 – Shift Solenoid ‘E’ Control Circuit High

DTC P0986 meaning on BMW

The Diagnostic Trouble Code (DTC) P0986 for BMW refers to an issue with the Shift Solenoid ‘E’ Control Circuit being detected as high. This means that the powertrain control module (PCM) has detected an electrical fault in the circuit responsible for controlling the Shift Solenoid ‘E’ in the transmission.

BMW DTC P0986 symptoms

Symptoms of DTC P0986 on a BMW may include:

  • Harsh or delayed shifting
  • Transmission slipping
  • Transmission stuck in a single gear
  • Decreased fuel efficiency
  • Illuminated Check Engine Light

BMW DTC P0986 causes

Common causes of DTC P0986 on a BMW include:

  • Faulty Shift Solenoid ‘E’
  • Open or short circuit in the wiring harness
  • Corroded or damaged connectors
  • Issues with the transmission control module (TCM)

BMW DTC P0986 seriousness

Ignoring DTC P0986 on a BMW can lead to further transmission problems and potential drivability issues. It is important to address this code promptly to prevent damage to the transmission and ensure safe operation of the vehicle.

How to diagnose DTC P0986 on BMW

To diagnose DTC P0986 on a BMW, a mechanic may perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Inspect the Shift Solenoid ‘E’ and its wiring for any visible damage
  3. Check the resistance of the solenoid and the wiring using a multimeter
  4. Test the continuity of the circuit to identify any open or short circuits
  5. Inspect the TCM for any signs of malfunction

How to fix DTC P0986 on BMW

To fix DTC P0986 on a BMW, the following steps may be taken:

  1. Replace the faulty Shift Solenoid ‘E’
  2. Repair or replace any damaged wiring or connectors
  3. Clear the fault codes and perform a test drive to ensure the issue is resolved
  4. If the problem persists, further diagnosis may be required to identify underlying issues

How to erase DTC P0986 on BMW

To erase DTC P0986 on a BMW, follow these steps:

  1. Use a diagnostic scanner to clear the fault codes
  2. Disconnect the battery for a few minutes to reset the PCM
  3. Reconnect the battery and start the vehicle to ensure the code has been cleared
  4. If the Check Engine Light does not reappear, the DTC P0986 has been successfully erased

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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