P07C1
Input/Turbine Shaft Speed Sensor B Circuit Low
Same as sensor A circuit low, applied to sensor B (used in dual-clutch boxes for the second input shaft). Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Same as sensor A circuit low, applied to sensor B (used in dual-clutch boxes for the second input shaft). Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Common causes
- high
Signal wire shorted to ground
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-770
- low
Connector pins corroded - high contact resistance
Less common, but worth ruling out after the more likely causes.
Typical part cost: $170-770
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P07C1 mean?
P07C1 means "Input/Turbine Shaft Speed Sensor B Circuit Low". It is a generic OBD-II code that points to a fault in the transmission.
What are the most common causes of P07C1?
signal wire shorted to ground; connector pins corroded - high contact resistance; harness chafing through insulation — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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