P1812 Chevrolet Code - Transmission Fluid Overtemperature
Quick Answer
The Powertrain Control Module (PCM) detects a Transmission Fluid Temperature (TFT) sensor input of more than 266°F, all conditions met for over 6 minutes, 48 seconds. Common causes include Faulty Transmission Fluid Temperature (TFT) Sensor, Transmission Fluid Temperature (TFT) Sensor harness is open or shorted, Transmission Fluid Temperature (TFT) Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1812 Chevrolet indicates Transmission Fluid Overtemperature.
- Common causes
- Common causes include Faulty Transmission Fluid Temperature (TFT) Sensor, Transmission Fluid Temperature (TFT) Sensor harness is open or shorted, Transmission Fluid Temperature (TFT) Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1812 Chevrolet Description
What are the Possible Causes of the DTC P1812 Chevrolet?
- Faulty Transmission Fluid Temperature (TFT) Sensor
- Transmission Fluid Temperature (TFT) Sensor harness is open or shorted
- Transmission Fluid Temperature (TFT) Sensor circuit poor electrical connection
How to Fix the DTC P1812 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1812 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1812 Chevrolet Code
1. What are the common symptoms of OBDII code P1812 (Transmission Fluid Overtemperature) in a Chevrolet?
- Common symptoms include illuminated Check Engine light, transmission overheating warning message, transmission slipping, and reduced power.
2. What could cause the OBDII code P1812 to trigger in a Chevrolet?
- The code P1812 is typically triggered by high transmission fluid temperatures caused by issues such as low fluid levels, a malfunctioning transmission fluid cooler, or a faulty temperature sensor.
3. How can I diagnose the OBDII code P1812 in my Chevrolet?
- Diagnosing the code involves checking the transmission fluid level and condition, inspecting the transmission fluid cooler for blockages or leaks, and testing the transmission temperature sensor for proper operation.
4. What are the potential risks of driving with the OBDII code P1812 present in a Chevrolet?
- Driving with the code P1812 can lead to further transmission damage, increased fuel consumption, and potential safety hazards due to reduced transmission performance.
5. Can I reset the OBDII code P1812 in my Chevrolet without fixing the underlying issue?
- While you can clear the code temporarily, it is important to address the root cause to prevent further transmission damage and ensure proper vehicle operation.
6. Are there any DIY repair tips for resolving the OBDII code P1812 in a Chevrolet?
- DIY repair tips include checking and topping up transmission fluid levels, inspecting for leaks in the transmission fluid cooler, and testing the transmission temperature sensor for faults.
7. How much does it typically cost to repair the OBDII code P1812 in a Chevrolet?
- The cost of repairs can vary depending on the underlying issue, but it may involve expenses for replacing the transmission fluid cooler, temperature sensor, or addressing any transmission fluid leaks.
8. Can extreme weather conditions contribute to the triggering of the OBDII code P1812 in a Chevrolet?
- Yes, extreme heat or towing heavy loads in hot weather can increase transmission fluid temperatures and potentially trigger the code P1812.
9. Is it safe to continue driving my Chevrolet if the OBDII code P1812 comes on intermittently?
- It is not recommended to continue driving if the code is intermittently coming on, as it indicates potential transmission overheating issues that should be addressed promptly.
10. How often should I check the transmission fluid and temperature system in my Chevrolet to prevent the OBDII code P1812 from appearing?
- It is advisable to check the transmission fluid level regularly and inspect the transmission cooling system at least once a year to help prevent transmission fluid overtemperature issues and the associated OBDII code P1812.
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