P27EF
Transmission Range Control B Position Sensor/Switch Circuit/Open
P27EF is an OBD-II diagnostic trouble code meaning: Transmission Range Control B Position Sensor/Switch Circuit/Open. Common causes: open or short circuit in the sensor circuit, gear position sensor b malfunction. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Check Engine light comes on
- The gearbox goes into emergency mode
- Difficulty starting the engine
- Unexpected shift to neutral
Causes
- Open or short circuit in the sensor circuit
- Gear Position Sensor B Malfunction
- Poor contact in the sensor connector
- Wiring harness damage
- Transmission control unit malfunction
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for oxidation
- Check the resistance of the position sensor
- Replace gear position sensor B if necessary
- Check the operation of the transmission control unit
Related codes
Error P27EF by Vehicle Brand
FAQ
What does the P27EF code mean?
P27EF is an OBD-II diagnostic trouble code that indicates: Transmission Range Control B Position Sensor/Switch Circuit/Open
What causes a P27EF error code?
The most common causes of P27EF include: Open or short circuit in the sensor circuit; Gear Position Sensor B Malfunction; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P27EF diagnostic trouble code?
To fix P27EF: Check the integrity of the sensor circuit. Inspect connectors and contacts for oxidation. Check the resistance of the position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P27EF?
Limited driving only, diagnose soon
How much does it cost to fix P27EF?
The estimated repair cost for P27EF is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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