OBD2 Car ScannerWhat does C1403 mean?
C1403 stands for Traction Control Valve RF Circuit Short To Battery. A chassis module has found a fault in a system like ABS, traction or stability control, steering or suspension.
Chassis codes cover the ABS, traction control, steering and suspension. When the car's computer sees a reading outside its normal range, it stores this code and may turn on a warning light on the dashboard.
Common causes
- Faulty or dirty wheel speed sensor
- Damaged sensor wiring
- Low brake fluid
- Faulty ABS pump or module
What to do
- Read all stored and pending codes with a scanner. Several codes together often point to one cause.
- Note the freeze frame data (speed, temperature, load) recorded when the code was set.
- Inspect the wiring and connectors of the part named in the code for damage, corrosion or looseness.
- Fix the most likely and cheapest cause first, then clear the code and drive to see if it comes back.
Read this code from your own car
Plug in a cheap ELM327 adapter and the app shows every fault code, what it means and how to fix it.
Frequently asked questions
What does C1403 mean?
C1403 means “Traction Control Valve RF Circuit Short To Battery”. It belongs to the chassis system group: A chassis module has found a fault in a system like ABS, traction or stability control, steering or suspension.
Is it safe to drive with C1403?
Avoid driving long distances. This kind of fault can cause damage or affect safety, so get it checked as soon as possible.
How do I clear C1403?
Fix the cause, then clear the code with an OBD2 scanner or app. If the fault is still there, the code will come back.
Related codes
- C1289Pressure Transducer Redundant / Secondary Input Circuit Failure
- C1400Traction Control Valve RF Circuit Failure
- C1401Traction Control Valve RF Circuit Open
- C1402Malfunction in Front Speed Sensor LH Circuit (Most Manufacturers) Traction Control Valve RF Circuit Short To Ground
- C1404Traction Control Valve Rear Circuit Failure
- C1405Traction Control Valve Rear Circuit Open
- C1406Traction Control Valve Rear Circuit Short To Ground
- C1407Traction Control Valve Rear Circuit Short To Battery
Code meanings can vary by manufacturer. This page is general guidance, not a repair manual. Always confirm the cause before replacing parts.