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 confused because two sensors that tell it what gear the car is in are not agreeing with each other.
The transmission range sensor detects the gear position and sends this information to the vehicle's computer. A correlation error means the signals from the two sensors do not match.
The P18EC code is triggered when the Powertrain Control Module (PCM) detects a discrepancy between the signals from the Transmission Range Sensor Circuit 'A' and Circuit 'B'. These sensors are responsible for indicating the current gear position of the transmission.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may go into limp mode
• Faulty transmission range sensor
• Wiring issues or poor connections
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the transmission range sensor.
• Test the transmission range sensor for proper operation.
• Replace the transmission range sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain transmission components.
• Ensure electrical connections are secure and free of corrosion.
• Follow the manufacturer's service schedule.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for accurate diagnosis and repair.
Transmission components may be covered under the vehicle's powertrain warranty.
This code has been more prevalent in vehicles with high mileage or those that have experienced harsh driving conditions.
Moderate – It is advisable to address this issue soon to avoid potential transmission damage.
Ignoring transmission issues can lead to unsafe driving conditions and may result in further damage to the vehicle.
• Vehicle in park or neutral
• Engine at operating temperature
The transmission range sensor is typically located on the outside of the transmission housing.
Q: Can I drive with a P18EC code?
A: It's not recommended to drive with this code as it may cause transmission issues and unsafe driving conditions.
Q: How do I reset the P18EC code?
A: After repairs, you can use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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