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 having trouble understanding what gear the car is in. It's like if you were playing a game and the controller couldn't tell if you pressed the jump button or the run button.
The P27EC code indicates an issue with the transmission range position sensor or switch, which is responsible for detecting the gear position of the transmission.
The transmission range control position sensor/switch provides input to the vehicle's powertrain control module (PCM) regarding the current gear selection. If the PCM detects a range or performance issue with this sensor, it triggers the P27EC code.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start in certain gear positions
• Faulty transmission range position sensor
• Wiring issues or poor connections
• Faulty PCM
PCM: Powertrain Control Module, the computer that manages engine and transmission functions.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnostics and reporting.
• Use an OBD-II scanner to check for codes.
• Inspect the transmission range position sensor and its wiring.
• Test the sensor for proper operation.
• Replace the transmission range position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain transmission components.
• Ensure all electrical connections are secure.
• Avoid harsh driving conditions that may stress the transmission.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if it is not shifting properly.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been reported in vehicles with electronic transmission controls, especially in models with high mileage.
Moderate – It should be addressed soon to prevent further transmission issues.
Driving with a malfunctioning transmission can be unsafe and may lead to further damage.
• Vehicle in park or neutral.
• Engine running at idle.
The transmission range position sensor is typically located on the side of the transmission housing.
Q: Can I drive with a P27EC code?
A: It's not recommended to drive for long periods with this code as it can lead to transmission issues.
Q: How do I reset the P27EC code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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