What Does C1133 Mean?
This code indicates the control module has detected that the clutch position sensor circuit is shorted to battery voltage. Instead of receiving the expected variable or switching signal from the clutch position sensor, the module is seeing a constant high-voltage signal on the circuit, indicating the signal wire has made contact with a power source.
Common Causes
35%
Chafed wiring where the clutch position sensor signal wire contacts an adjacent power wire in the harness
25%
Failed clutch position sensor with internal short to the power supply circuit
25%
Corroded connector causing cross-contact between the signal pin and the power supply pin
15%
Incorrect wiring repair or aftermarket installation shorting the signal to a 12V source
Diagnostic Steps
1
Step 1: Disconnect the clutch position sensor connector and measure the voltage on the signal wire at the control module side. If battery voltage is still present with the sensor disconnected, the short is in the harness.
2
Step 2: With the sensor disconnected, check for continuity between the signal wire and the power supply wire in the harness. Any continuity indicates wire-to-wire contact.
3
Step 3: Visually trace the wiring harness from the clutch pedal to the control module, looking for areas where insulation is damaged and wires may cross. Inspect any previous wiring repairs.
4
Step 4: If the wiring is intact, test the sensor by measuring resistance between signal output and power input terminals. Any low resistance reading indicates internal sensor failure.
5
Step 5: Repair or replace the failed component, clear codes, and verify proper signal voltage transitions in live data while cycling the clutch pedal.
Estimated Repair Cost
$80 - $300
Parts + labor, varies by vehicle and location
This code indicates the control module has detected that the clutch position sensor circuit is shorted to battery voltage. Instead of receiving the expected variable or switching signal from the clutch position sensor, the module is seeing a constant high-voltage signal on the circuit, indicating th...
The most common cause of C1133 (Clutch position ckt short to battery) is: Chafed wiring where the clutch position sensor signal wire contacts an adjacent power wire in the harness
Typical repair costs for C1133 range from $80 to $300, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Cruise control and starting interlock may be affected. Vehicle is generally safe to drive but electronic systems relying on clutch position input will not function correctly. Repair at earliest convenience.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1133 to identify the root cause.
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Quick Info
Category
Chassis
System
Clutch Position / Drivetrain Control
Difficulty
Type
Manufacturer
Recommended Tools
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