Tire Pressure Sensor Fault
Indicates a fault with 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 computer sees that one or more tire pressure sensors are giving bad readings, possibly due to low battery, damaged sensor, or a communication issue.
What the computer is actually seeing
The Control Unit expects readings from the tire pressure sensors to be within a specific voltage range. If a sensor is not responding or sending a signal outside the expected parameters, the code is triggered.
What a healthy reading looks like
Typical sensor voltage should be between 0.5V to 4.5V depending on tire pressure. Each tire pressure sensor should transmit data every 60 seconds after a drive cycle starts.
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. Start by checking the tire pressure in all tires. Ensure they are at the manufacturer-recommended PSI (usually around 30-35 PSI). If low, fill to the correct level.
- 22. Inspect the tire pressure sensors for visual damage or corrosion on the connectors. Make sure all wiring is intact and not frayed.
- 33. Use a scan tool to check individual tire sensor readings. Compare voltages to expected values (0.5V to 4.5V). If one or more read zero volts or outside this range, it may be faulty.
- 44. If sensor readings are normal, check the TPMS control module for faults or communication issues. Look for codes related to the module itself.
- 55. If you find a faulty sensor, replace it and recheck system functionality.
Common causes
- Dead battery in the tire pressure sensor
- Damaged tire pressure sensor
- Faulty wiring or connectors
- Incorrect tire pressure causing sensor malfunction
- Issues with the vehicle's TPMS control module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but you should address it soon as it relates to tire safety.
Will the code come back?
If the underlying issue isn't fixed, yes, the code is likely to reappear.
Why does this code pair with SPN 1526?
SPN 1526 usually indicates a communication issue, often related to the same sensor or wiring fault.
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 →