C2804
Brake Pressure Transducer Ground Circuit Open
C2804 is an OBD-II diagnostic trouble code meaning: Brake Pressure Transducer Ground Circuit Open. Common causes: broken ground wire of brake pressure sensor, oxidation or corrosion of contacts in the connector. Estimated repair cost: $33–89.
Symptoms
- The brake system fault indicator is on
- Incorrect operation of the ABS/ESP system
- Lost brake pressure data on dashboard
Causes
- Broken ground wire of brake pressure sensor
- Oxidation or corrosion of contacts in the connector
- Malfunction of the pressure sensor itself
- Damage to the brake wiring harness
How to Fix
- Check the continuity of the sensor ground circuit using a multimeter
- Inspect connectors and contacts for oxidation
- Replace the brake pressure sensor if necessary.
- Clean or repair damaged areas of the wiring harness
Related codes
FAQ
What does the C2804 code mean?
C2804 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Transducer Ground Circuit Open
What causes a C2804 error code?
The most common causes of C2804 include: Broken ground wire of brake pressure sensor; Oxidation or corrosion of contacts in the connector; Malfunction of the pressure sensor itself; Damage to the brake wiring harness.
How do I fix a C2804 diagnostic trouble code?
To fix C2804: Check the continuity of the sensor ground circuit using a multimeter. Inspect connectors and contacts for oxidation. Replace the brake pressure sensor if necessary.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C2804?
Do not drive — repair immediately
How much does it cost to fix C2804?
The estimated repair cost for C2804 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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