Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is too cold, and it doesn't like it. It's like when you don't want to get out of bed because it's too cold outside.
The Powertrain Control Module (PCM), Engine Control Module (ECM), or Transmission Control Module (TCM) is detecting a temperature that is lower than expected for proper operation.
The P163A code is triggered when the PCM/ECM/TCM detects that its internal temperature is below the minimum operating threshold. This can affect the module's ability to process data and manage the vehicle's engine or transmission systems effectively.
• Check Engine Light illuminated
• Poor engine performance
• Transmission shifting issues
• Faulty temperature sensor within the PCM/ECM/TCM
• Poor electrical connections or wiring issues
• Environmental conditions causing unusually low temperatures
PCM: Powertrain Control Module
ECM: Engine Control Module
TCM: Transmission Control Module
• Scan the vehicle for additional codes and freeze frame data.
• Inspect the wiring and connectors to the PCM/ECM/TCM.
• Check the ambient temperature and compare it to the module's internal temperature reading.
• Repair or replace faulty wiring or connectors.
• Replace the temperature sensor within the PCM/ECM/TCM.
• Reprogram or replace the PCM/ECM/TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Ensure the vehicle is not exposed to extreme cold for extended periods.
• Regularly inspect and maintain electrical connections.
• Keep the vehicle's software updated.
Sensor Issue
• Avoid driving in extreme cold conditions if possible.
• Have a professional inspect the vehicle if the Check Engine Light is on.
Check with the vehicle manufacturer for warranty coverage on the PCM/ECM/TCM.
This code has been more commonly reported in vehicles operating in colder climates.
Moderate – While the vehicle may still be drivable, it is advised to address the issue to prevent further complications.
Driving with a malfunctioning PCM/ECM/TCM can affect vehicle performance and safety.
• Vehicle parked in a cold environment
• Engine at startup
The PCM/ECM/TCM is typically located in the engine bay or under the dashboard.
Q: Can I drive my car with a P163A code?
A: It's possible, but not recommended as it may affect performance and lead to other issues.
Q: How do I clear a P163A code?
A: You can clear the code with an OBD-II scanner, but it's important to fix the underlying issue first.
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