Rear Brake Pressure Sensor Range/Performance
The C0243 code means the vehicle's onboard diagnostic system has detected: Rear Brake Pressure Sensor Range/Performance. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- hard
- Estimated cost
- $150 - $600 (parts and labor)
Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.
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Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.
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Common Symptoms
- ABS warning light on
- Brake pressure reading abnormal
- Degraded brake modulation
- Stability control disabled
Probable Causes (Ranked by Likelihood)
- Failed brake pressure sensor Very High
- Air in brake hydraulic circuit High
- Restricted brake line Moderate
- ABS hydraulic unit fault Low
Step-by-Step Diagnostic Procedure
-
Compare brake pressure readings from all sensors
-
Bleed brake system to remove air
-
Check brake lines for restrictions
-
Inspect ABS hydraulic unit for leaks
Frequently Asked Questions
What does code C0243 mean?
Code C0243 indicates rear brake pressure sensor range/performance. This is a chassis-related diagnostic trouble code stored in your vehicle's on-board computer.
Can I drive with code C0243?
You should not drive with this code active as it affects critical safety systems.
How much does it cost to fix C0243?
Typical repair costs range from $150 - $600 (parts and labor). The actual cost depends on the root cause, vehicle make and model, and local labor rates. Get a proper diagnosis before replacing parts.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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