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 found something wrong with the temperature sensors in the transmission. It's like when a thermometer gives a wrong reading, and the computer gets confused.
The code P183A indicates a discrepancy between the readings of the transmission fluid temperature sensor and the internal temperature sensor within the Transmission Control Module (TCM) at lower temperature ranges.
The P183A code is triggered when the Transmission Control Module (TCM) detects a correlation issue between the transmission fluid temperature sensor and the TCM's internal temperature sensor. This usually occurs when the temperature readings do not match or fall within expected parameters, particularly at lower temperature ranges.
• Check Engine Light (CEL) is on
• Transmission may shift erratically
• Poor fuel economy
• Faulty transmission fluid temperature sensor
• Faulty TCM internal temperature sensor
• Wiring issues or poor connections
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the temperature sensors.
• Test the transmission fluid temperature sensor and TCM internal sensor for proper operation.
• Replace the faulty transmission fluid temperature sensor.
• Repair or replace damaged wiring or connectors.
• Replace the TCM if the internal sensor is faulty.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels.
• Inspect and clean sensor connections periodically.
• Use recommended transmission fluid.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Keep a regular maintenance schedule.
Check if the vehicle's powertrain warranty covers sensor replacements.
This code has been more prevalent in vehicles with higher mileage or those that have not had regular transmission maintenance.
Moderate – It should be addressed soon to prevent potential transmission issues.
Driving with a malfunctioning transmission sensor can lead to unsafe driving conditions.
• Engine at operating temperature
• Vehicle in park or neutral
The transmission fluid temperature sensor is typically located on or near the transmission oil pan.
Q: Can I drive with a P183A code?
A: It's not recommended to drive for extended periods as it may cause transmission issues.
Q: How can I reset the P183A code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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