ABS/TCS Pressure Sensor Circuit Range/Performance
What does C0132 mean?
The C0132 code means the vehicle's onboard diagnostic system has detected: ABS/TCS Pressure Sensor Circuit Range/Performance. This is a critical severity code.
Common Symptoms
- ABS warning light on
- Traction control disabled
- Erratic ABS operation
- Brake pedal pulsation when ABS is not needed
- Service StabiliTrak warning on GM vehicles
Probable Causes (Ranked by Likelihood)
- Pressure sensor reading out of expected range Very High
- Air trapped in ABS hydraulic modulator High
- Contaminated or degraded brake fluid Moderate
- ABS modulator internal leak affecting pressure Moderate
- ABS control module calibration drift Low
Step-by-Step Diagnostic Procedure
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Read DTCs and monitor pressure sensor live data during brake application
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Perform a complete ABS automated bleed procedure
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Check brake fluid condition and replace if dark or contaminated
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Compare actual brake pressure readings to expected values in service manual
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Check for air in the ABS modulator by performing multiple firm brake applications
Frequently Asked Questions
Can bleeding the ABS system fix C0132?
Yes, in many cases air trapped in the ABS modulator causes out-of-range pressure readings. A proper ABS bleed procedure using a scan tool that can cycle the ABS valves often resolves this code.
What causes air in the ABS system?
Air enters the ABS system when brake lines are opened for pad or caliper replacement without a proper ABS bleed procedure afterward. Running the master cylinder dry or a brake fluid leak can also introduce air.
Is C0132 covered under any GM recalls?
Some GM vehicles have had technical service bulletins related to ABS pressure sensor issues. Check with your dealer using your VIN for any applicable TSBs or recalls that may cover the repair.