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 a problem with the sensor that checks how hot the transmission fluid is. It's like when a thermometer isn't working right and gives a wrong temperature reading.
The Transmission Control Module (TCM) monitors the temperature of the transmission fluid to ensure it operates within a safe range. This code indicates a discrepancy in the readings from the internal temperature sensor.
The P182B code is triggered when the TCM detects a correlation issue between the internal switch on temperature sensor and the transmission fluid temperature sensor, specifically in the medium temperature range. This could indicate a fault in the sensor readings or a potential issue with the TCM itself.
• Check Engine Light is on
• Transmission may overheat
• Erratic shifting or transmission performance issues
• Faulty transmission fluid temperature sensor
• Wiring issues or poor connections
• Malfunctioning Transmission Control Module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the transmission fluid temperature sensor for proper operation.
• Replace the faulty transmission fluid temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the Transmission Control Module (TCM) if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly check and maintain transmission fluid levels.
• Ensure proper cooling of the transmission system.
• Perform routine inspections of wiring and connectors.
Sensor Issue
• Avoid driving the vehicle under heavy load until the issue is resolved.
• Monitor the transmission temperature if possible.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle's manufacturer for warranty coverage on the transmission system.
The P182B code has been associated with sensor failures and wiring issues in vehicles with automatic transmissions.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a faulty transmission sensor may lead to unsafe driving conditions. Address the issue as soon as possible.
• Vehicle at operating temperature
• Transmission fluid level checked
The transmission fluid temperature sensor is typically located within the transmission housing or near the transmission fluid pan.
Q: Can I drive with a P182B code?
A: It's not recommended to drive for extended periods as it may cause transmission damage.
Q: How can I prevent P182B from occurring?
A: Regular maintenance and inspection of the transmission and its components can help prevent this issue.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.