P0871 Code - OD Pressure Switch Rationality Fault
Quick Answer
The P0871 diagnostic trouble code (DTC) refers to an OD (overdrive) pressure switch rationality fault in the vehicle's transmission system. Common causes include Faulty overdrive pressure switch, Wiring or connector issues, Low transmission fluid levels. 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
- P0871 indicates OD Pressure Switch Rationality Fault.
- Common causes
- Common causes include Faulty overdrive pressure switch, Wiring or connector issues, Low transmission fluid levels.
- 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.
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Code P0871 Description
The P0871 diagnostic trouble code (DTC) refers to an OD (overdrive) pressure switch rationality fault in the vehicle's transmission system. This code indicates that there is an issue with the operation of the overdrive pressure switch, which is responsible for regulating the hydraulic pressure in the transmission. The overdrive function allows the vehicle to achieve better fuel efficiency at higher speeds by reducing engine RPMs.
Common Causes of P0871
- Faulty overdrive pressure switch
- Wiring or connector issues
- Low transmission fluid levels
- Internal transmission damage
- Electronic control module (ECM) malfunction
Symptoms of P0871
- Harsh or delayed shifting
- Slipping gears
- Overdrive not engaging
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P0871
- Begin by conducting a thorough diagnosis using a scan tool to retrieve the specific trouble code and identify the root cause of the issue.
- Inspect the wiring and connectors associated with the overdrive pressure switch for any signs of damage or corrosion. Repair or replace as needed.
- Check the transmission fluid level and condition. Top off or replace the fluid if necessary.
- Test the overdrive pressure switch and replace it if it is found to be faulty.
- Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P0871
The cost of repairing a P0871 code can vary depending on the extent of the issue and the specific repairs needed. Generally, the replacement of the overdrive pressure switch and associated components can range from $150 to $300. Additional costs may include diagnostic fees, fluid replacement, and labor charges. It is advisable to consult with a qualified mechanic or transmission specialist for an accurate cost estimate based on your vehicle's make and model. Keep in mind that labor rates and part prices can fluctuate based on location and service provider.
When is the Code Detected?
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Code P0871 Information for Specific Makes
- P0871 Chevrolet — Pressure Switch Solenoid 'E' Circuit Stuck Open
- P0871 Chrysler — OD Pressure Switch Rationality Fault
- P0871 Dodge — OD Pressure Switch Rationality Fault
- P0871 GMC — Pressure Switch Solenoid 'E' Circuit Stuck Open
- P0871 Jeep — OD Pressure Switch Rationality Fault
- P0871 RAM — OD Pressure Switch Rationality Fault
Frequently Asked Questions about P0871 Code
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