Manufacturer Code Charts: 21

Control System DTCs

TPMS DTC Troubleshooting: 21, 22, 23, 24

DTC 21, 22, 23, 24 : Tire Pressure Sensor Abnormally High Temperature

1. Problem verification:

Problem verification
-1. Turn the ignition switch to LOCK (0).

-2. Make sure the tires have cooled down.
NOTE: An abnormal rise in the internal temperature of the tires can be caused by:

* Excessive braking
* Failure to release the parking brake (rear tires only)
* Leaving the vehicle running while parked (front tires only)
* Improper assembly of a wheel and tire

-3. Test-drive the vehicle at 28 mph (45 km/h) or more for at least 1 minute.

Does the low tire pressure indicator or the low tire pressure/TPMS indicator go off?
-YES- Intermittent failure, the system is OK at this time.
-NO- The failure is duplicated. Go to step 2.

2. Tire pressure sensor check:

Tire pressure sensor check
-1. Check for DTCs with the HDS.

-2. Note the tire pressure sensor(s) number by the indicated DTC.





-3. Do the tire pressure sensor location procedure to determine the affected tire location and relate it to the tire pressure sensor number Tire Pressure Sensor Location.

-4. Check the TIRE 1, TIRE 2, TIRE 3, or TIRE 4 AIR TEMPERATURE in the TPMS DATA LIST with the HDS.

Is 176 °F (80 °C) or more indicated?
-YES- Replace the appropriate tire pressure sensor Service and Repair.
-NO- Go to step 3.

3. TPMS control unit check:

TPMS control unit check
-1. Clear the DTC with the HDS.

-2. Test-drive the vehicle at 28 mph (45 km/h) or more for at least 1 minute.

-3. Check for DTCs with the HDS.

Is DTC 21, 22, 23, or 24 indicated?
-YES- Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit Service and Repair, and recheck.
-NO- If any other DTCs are indicated, troubleshoot the appropriate DTC.
-NO- If no DTCs are indicated, the system is OK at this time.