Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with a switch that helps control how the car changes gears. It's like a light switch that's not working right.
The P071E code indicates that the transmission mode switch B circuit is experiencing a low voltage condition, which means the signal is weaker than expected.
The Transmission Mode Switch B is part of the vehicle's transmission control system. It helps the vehicle's computer determine the appropriate gear for the transmission. A 'circuit low' condition means that the voltage or signal from this switch is below the expected range, which can affect transmission performance.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may enter 'limp' mode
• Faulty transmission mode switch
• Wiring issues such as shorts or open circuits
• Faulty transmission control module (TCM)
Transmission: A system in the vehicle that transmits power from the engine to the wheels.
TCM: Transmission Control Module, a device that controls the transmission functions.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the transmission mode switch for proper operation
• Replace the faulty transmission mode switch
• Repair or replace damaged wiring or connectors
• Reprogram or replace the TCM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of the transmission system
• Periodic inspection of wiring and connectors
• Promptly address any transmission-related warning lights
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code is relatively common in vehicles with electronic transmission controls, especially as they age.
Moderate – It should be addressed soon to avoid potential transmission damage.
Driving with a malfunctioning transmission can lead to unsafe driving conditions. Address the issue promptly.
• Vehicle ignition on
• Transmission in neutral or park
The transmission mode switch is typically located on or near the transmission housing.
Q: Can I drive with a P071E code?
A: It's not recommended to drive with this code active, as it can lead to transmission issues.
Q: How do I reset the P071E code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, the code may return.
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