P071D
Transmission Mode Switch B Circuit
P071D is an OBD-II diagnostic trouble code meaning: Transmission Mode Switch B Circuit. Common causes: open or short circuit in the mode switch circuit, transmission mode switch malfunction. Estimated repair cost: $17–72.
Symptoms
- Incorrect display of the current transmission mode on the instrument panel
- Gear shifting problems
- The engine does not start in certain modes (for example, in P or N position)
- The transmission warning light comes on
- The transmission may go into emergency mode
Causes
- Open or short circuit in the mode switch circuit
- Transmission mode switch malfunction
- Damaged or oxidized contacts in connectors
- Wiring Harness Problems
- Transmission control module (TCM) malfunction
How to Fix
- Check the continuity of the mode switch B circuit
- Inspect contacts and connectors for damage and corrosion
- Check the resistance of the mode switch
- If necessary, replace the transmission mode switch
- Check TCM software and update if necessary
Related codes
Error P071D by Vehicle Brand
FAQ
What does the P071D code mean?
P071D is an OBD-II diagnostic trouble code that indicates: Transmission Mode Switch B Circuit
What causes a P071D error code?
The most common causes of P071D include: Open or short circuit in the mode switch circuit; Transmission mode switch malfunction; Damaged or oxidized contacts in connectors; Wiring Harness Problems.
How do I fix a P071D diagnostic trouble code?
To fix P071D: Check the continuity of the mode switch B circuit. Inspect contacts and connectors for damage and corrosion. Check the resistance of the mode switch. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P071D?
Limited driving only, diagnose soon
How much does it cost to fix P071D?
The estimated repair cost for P071D is $17–72. Actual cost depends on your vehicle, location, and labor rates.
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