B1251

Tire Pressure Monitoring System (TPMS)

Pinpoint Test H: DTC B1251:00

Normal Operation

- DTC B1251:00 (Tire Pressure Sensor Low Battery: No Sub Type Information)- This DTC sets in continuous memory in the Body Control Module (BCM) when there is a fault in the Tire Pressure Monitoring System (TPMS), such as a damaged or missing TPMS (Tire Pressure Monitoring System) sensor(s), or when attempting to train a TPMS (Tire Pressure Monitoring System) sensor(s) with a low battery. The TPMS (Tire Pressure Monitoring System) warning indicator flashes for 70 seconds then illuminates continuously when the ignition switch is turned to the ON position. The message center also displays TIRE PRESSURE SENSOR FAULT.

This pinpoint test is intended to diagnose the following:

- TPMS (Tire Pressure Monitoring System) sensor(s)

PINPOINT TEST H : DTC B1251:00

H1 TRAIN THE TPMS (Tire Pressure Monitoring System) SENSORS TO DETERMINE THE INOPERATIVE SENSOR

- Train all 4 TPMS (Tire Pressure Monitoring System) sensors. Refer to Tire Pressure Monitoring System (TPMS) Sensor Training .

Did all of the TPMS (Tire Pressure Monitoring System) sensors transmit correctly when each TPMS (Tire Pressure Monitoring System) sensor transmitted to the TPM (Tire Pressure Monitor) module?

Yes
CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
If the TPMS (Tire Pressure Monitoring System) sensors fail to train, REFER to Wheel Rotation And Sensor Training Techniques.

If the TPMS (Tire Pressure Monitoring System) sensor(s) fails to train a second time, INSTALL a new
TPMS (Tire Pressure Monitoring System) sensor(s) for the sensor(s) in question. REFER to Tire Pressure Monitoring System (TPMS) Sensor .