What it means
The clutch pedal position sensor A reports a circuit intermittent/erratic fault. Pedal position cannot be measured reliably.
At a glance
- Usually lights the check-engine light
How it works
Clutch pedal position sensor A provides a changing signal as the pedal moves so the control module can track clutch position. This code sets when that signal is unstable or changes erratically, often because a sensor or connector contact intermittently loses connection, particularly under vibration.
Common causes
Most likely first.
- Position sensor failed
- Wiring fault
- Connector with intermittent contact under vibration
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Record freeze-frame data and watch live sensor A position while slowly operating the clutch pedal to look for sudden jumps or dropouts.
- Inspect the sensor A connector, terminals, and harness for looseness, corrosion, chafing, or strain that could interrupt contact.
- With the vehicle safely stationary, check whether gentle movement of the harness or connector coincides with signal dropouts, keeping clear of moving parts.
- Check sensor A supply, ground, and signal wiring for intermittent opens or shorts using the wiring diagram and the manufacturer’s test procedure.
- If the wiring remains stable, test sensor A’s output through repeated pedal travel against the manufacturer’s specification.
Common fixes
- Secure a loose sensor A connector and relieve strain on its harness.
- Repair chafed wiring or replace terminals with intermittent contact.
- Replace clutch pedal position sensor A if its output remains erratic with stable wiring.
- Clear the code and confirm the reading remains smooth through repeated pedal operation.
Can I keep driving?
Intermittent pedal data can make clutch-related functions or shifts unpredictable, so avoid driving if symptoms recur. Stop if gear selection becomes unreliable, especially in traffic or where a missed shift could create a hazard.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.