P071A Code - Transmission Tow Mode Switch Circuit
Quick Answer
The P071A diagnostic trouble code (DTC) refers to the Transmission Tow Mode Switch Circuit. Common causes include Faulty tow mode switch, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM). 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
- P071A indicates Transmission Tow Mode Switch Circuit.
- Common causes
- Common causes include Faulty tow mode switch, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM).
- 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 P071A Description
The P071A diagnostic trouble code (DTC) refers to the Transmission Tow Mode Switch Circuit. This code indicates that there is a problem with the circuit that controls the transmission tow mode switch in the vehicle. The tow mode switch is typically used to adjust the transmission's shift points and torque converter lockup when towing heavy loads, helping the vehicle perform better under added stress.
Common Causes of P071A
- Faulty tow mode switch
- Damaged wiring or connectors in the circuit
- Malfunctioning transmission control module (TCM)
- Transmission fluid contamination
- Internal transmission issues
Symptoms of P071A
- Harsh or delayed shifting
- Transmission slipping
- Reduced fuel efficiency
- Illuminated Check Engine Light
- Difficulty towing heavy loads
How to Fix P071A
- Begin by performing a thorough inspection of the tow mode switch, wiring, and connectors to identify any visible damage or issues.
- Use a multimeter to test the continuity of the circuit and check for any shorts or open circuits.
- If the tow mode switch is faulty, replace it with a new one and ensure proper installation.
- Inspect the transmission control module (TCM) for any signs of damage or malfunction and replace if necessary.
- Clear the DTC codes and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P071A
The typical repair costs for addressing the P071A code can vary depending on the specific cause of the issue. In general, replacing a tow mode switch or repairing wiring may cost between $100 to $300, including parts and labor. If the transmission control module needs to be replaced, the cost could range from $200 to $500 or more. Additional diagnostic fees and labor charges may apply, with total repair costs potentially exceeding $500. It's advisable to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on the vehicle's make and model, as well as the extent of the repairs needed.
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Code P071A Information for Specific Makes
- P071A Buick — Transmission Tow Mode Switch Circuit
- P071A Cadillac — Transmission Tow Mode Switch Circuit
- P071A Chevrolet — Transmission Tow Mode Switch Circuit
- P071A GMC — Transmission Tow Mode Switch Circuit
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