P0812 Honda Code - Open In Transmission Range Switch ATP RVS Switch Circuit
Quick Answer
The P0812 diagnostic trouble code for Honda vehicles indicates an open in the transmission range switch ATP RVS (Automatic Transmission Park/Reverse Switch) circuit. Common causes include Damaged or faulty transmission range switch, Corroded or loose electrical connections in the circuit, Wiring harness issues, such as frayed or damaged wires. 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
- P0812 Honda indicates Open In Transmission Range Switch ATP RVS Switch Circuit.
- Common causes
- Common causes include Damaged or faulty transmission range switch, Corroded or loose electrical connections in the circuit, Wiring harness issues, such as frayed or damaged wires.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0812 Honda Description
The P0812 diagnostic trouble code for Honda vehicles indicates an open in the transmission range switch ATP RVS (Automatic Transmission Park/Reverse Switch) circuit. The transmission range switch, also known as the neutral safety switch, is a crucial component in the automatic transmission system. It is responsible for ensuring that the vehicle can only be started in Park or Neutral, and it also helps determine the correct gear position for smooth shifting.
Common Causes of P0812 Honda
- Damaged or faulty transmission range switch
- Corroded or loose electrical connections in the circuit
- Wiring harness issues, such as frayed or damaged wires
- Faulty TCM or other related transmission control components
Symptoms of P0812 Honda
- Difficulty starting the vehicle
- Inability to shift gears or erratic shifting
- Vehicle stalling or idling inconsistently
- Dashboard warning lights, such as the Check Engine Light or Transmission Warning Light, illuminated
How to Fix P0812 Honda
- Diagnose the issue using a scan tool to retrieve the fault code and perform a visual inspection of the transmission range switch and associated wiring.
- Test the continuity of the transmission range switch and the wiring harness to identify any open circuits or faults.
- Replace the transmission range switch if it is found to be faulty or damaged.
- Repair or replace any corroded or damaged wiring in the ATP RVS switch circuit.
- Clear the fault code and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0812 Honda
The cost of repairing a P0812 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of replacing a transmission range switch can range from $150 to $300, including parts and labor. However, additional costs may be incurred if there are wiring harness issues or other related components that need to be repaired or replaced. It is recommended to consult with a trusted mechanic or dealership for a more accurate cost estimate based on your vehicle's make and model.
Need more information about the P0812 Honda code?
Need more information on how to fix the P0812 Honda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0812 Honda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0812 Honda Code
No Frequently Asked Questions about P0812 Honda Code found.
Discuss the causes and fixes for P0812 Honda OBDII Code
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.