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 has detected a problem with the sensor that measures how hot the transmission fluid is. It's like a thermometer for the car's transmission, and it's not working right.
The P186B code indicates an issue with the circuit of the transmission fluid temperature sensor 'C'. This sensor helps the car's computer monitor the temperature of the transmission fluid to ensure it operates within the optimal range.
The Transmission Fluid Temperature (TFT) Sensor 'C' is responsible for providing the Powertrain Control Module (PCM) with the temperature of the transmission fluid. This information is crucial for the PCM to manage transmission operations effectively. A malfunction in this sensor or its circuit can lead to incorrect transmission behavior.
• Transmission may overheat
• Poor fuel economy
• Transmission may not shift properly
• Faulty transmission fluid temperature sensor
• Damaged or corroded wiring or connectors
• PCM issues or software glitches
PCM: Powertrain Control Module
TFT: Transmission Fluid Temperature
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the transmission fluid temperature sensor with a multimeter.
• Replace the transmission fluid temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels.
• Inspect wiring and connectors for wear and tear.
• Schedule regular vehicle maintenance.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Monitor transmission temperature if possible.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code has been reported in vehicles with high mileage or those that have not had regular transmission maintenance.
Moderate – It's important to address this issue soon to avoid potential transmission damage.
Ignoring this code can lead to transmission failure, which may cause safety issues while driving.
• Engine must be running.
• Transmission fluid must be at operating temperature.
The transmission fluid temperature sensor is typically located inside the transmission or near the transmission fluid pan.
Q: What happens if I ignore the P186B code?
A: Ignoring this code can lead to transmission overheating and potential failure, which can be costly to repair.
Q: Can I drive with the P186B code?
A: It's not recommended to drive for extended periods with this code active, as it can lead to transmission issues.
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