Tire Pressure Monitoring System (TPMS) Sensor Fault
Indicates a fault in the tire pressure sensor system.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The TPMS is supposed to monitor the air pressure in your tires and alert you if they're low. If there's a fault, it means the system can't get accurate readings from one or more sensors.
What the computer is actually seeing
The TPMS control module receives data from the tire pressure sensors. A fault occurs when the signal is weak, missing, or erroneous based on expected values.
What a healthy reading looks like
Sensor should report a voltage between 2.5V to 3.5V when the tire is properly inflated.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors for any visible damage or corrosion. Repair if necessary.
- 22. Check the tire pressure in all tires. Make sure they are inflated to the manufacturer's recommended pressure.
- 33. Use a TPMS tool or scan tool to check the status of each tire pressure sensor. Look for any sensors that are not transmitting data.
- 44. If a sensor shows a fault, swap it with a known good sensor and see if the code follows.
- 55. If the code still appears, replace the faulty TPMS sensor. If it does not, check for issues in the wiring or connectors.
Common causes
- Faulty TPMS sensor
- Damaged wiring harness or connectors
- Dead battery in the TPMS sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but you may not know if your tires are low on pressure, which can lead to unsafe conditions.
Will this code go away on its own?
If the underlying issue is fixed, the code may clear itself after driving for a certain distance and conditions are normal again.
Why does it pair with other fault codes?
Multiple faults may indicate a systemic issue, like wiring problems affecting multiple sensors or components.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →