P071A OBD-II: Transmission Mode Switch "A" Circuit
P071A Severity
Should you fix P071A yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P071A?
The Tow/Haul Switch enhances the transmissions shifting for towing. If the switch fails to operate properly, code P071A will set and towing mode will be disabled. On most vehicles this switch is part of the shift lever.
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