P2812 2018 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open
Quick Answer
The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve. 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
- P2812 2018 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve.
- 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 P2812 2018 GMC Sierra Description
What are the Possible Causes of the DTC P2812 2018 GMC Sierra?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Control Solenoid Valve
- Transmission Control Solenoid Valve harness is open or shorted
- Transmission Control Solenoid Valve circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P2812 2018 GMC Sierra?
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 P2812 2018 GMC Sierra 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 P2812 2018 GMC Sierra Code
1. What does the OBDII code P2812 mean on a 2018 GMC Sierra?
P2812 indicates an issue with the Transmission Control Solenoid Valve 7 Control Circuit, specifically an open circuit.
2. What are the common symptoms of P2812 in a 2018 GMC Sierra?
Symptoms may include harsh shifting, transmission slipping, failure to engage certain gears, or the vehicle entering "limp mode."
3. What causes the P2812 code to appear in a GMC Sierra?
Common causes include a faulty transmission control solenoid, damaged wiring or connectors in the circuit, or a malfunctioning transmission control module (TCM).
4. Can I continue driving my 2018 GMC Sierra with the P2812 code?
While the vehicle may still be drivable, continuing to drive with this code can lead to further transmission damage. It’s best to address the issue promptly.
5. How do I diagnose the P2812 code on a 2018 GMC Sierra?
Diagnosis typically involves inspecting the wiring and connectors for damage, testing the transmission control solenoid for proper function, and scanning the TCM for additional codes or malfunctions.
6. Is P2812 a serious issue for my 2018 GMC Sierra?
Yes, it can be serious as it affects the transmission’s ability to function properly, potentially leading to costly repairs if ignored.
7. How much does it cost to fix the P2812 code on a GMC Sierra?
Repair costs vary but may range from $150 to $500, depending on whether the issue is a damaged wire, a faulty solenoid, or a more complex TCM problem.
8. Can a bad battery cause the P2812 code to appear?
While rare, a weak or failing battery can sometimes lead to electrical issues that may affect the transmission control circuit.
9. What tools are needed to fix the P2812 code on a 2018 GMC Sierra?
You may need an OBDII scanner, a multimeter for testing electrical circuits, and basic tools to access the transmission components.
10. Does the transmission fluid condition affect the P2812 code?
Yes, dirty or low transmission fluid can contribute to solenoid issues, so checking and replacing the fluid is a good starting point.
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