Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a signal from the transmission that is too high. It's like if a light switch was stuck in the 'on' position even when you try to turn it off.
The transmission range control sensor/switch B is reporting a voltage level that is higher than expected by the engine control module (ECM).
The P27F2 code is triggered when the ECM detects a high voltage signal from the transmission range control B position sensor/switch. This sensor helps the vehicle's computer understand what gear the transmission is in. A high circuit signal indicates a potential issue with the sensor or its wiring.
• Check Engine Light illuminated
• Transmission may not shift correctly
• Vehicle may not start
• Faulty transmission range control sensor/switch
• Wiring issues such as short to voltage
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the transmission range control sensor/switch for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty transmission range control sensor/switch.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect transmission wiring.
• Ensure connectors are clean and secure.
• Perform routine transmission maintenance.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult with a professional mechanic for accurate diagnosis.
Repairs may be covered under powertrain warranty if the vehicle is within warranty period.
This code is relatively uncommon and typically associated with wiring or sensor failures.
Moderate – It should be addressed soon to avoid transmission issues.
Driving with a malfunctioning transmission sensor can lead to unsafe driving conditions.
• Vehicle in park or neutral.
• Engine running.
The transmission range control sensor/switch is typically located on the transmission housing.
Q: Can I drive with a P27F2 code?
A: It's not recommended as it may cause further transmission issues.
Q: How do I clear a P27F2 code?
A: The code can be cleared with an OBD-II scanner after the issue is fixed.
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