Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc c2024 tire 4 air pressure low (normal mode)

Subaru Legacy BN/BS (2015-2019) Service Manual / Tire pressure monitoring system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc c2024 tire 4 air pressure low (normal mode)

DTC DETECTING CONDITION:

Inflation pressure of tires dropped below the specified value.

NOTE:

For the specifications, refer to “CURRENT DATA”. Read Current Data > LIST

TROUBLE SYMPTOM:

Tire pressure warning light illuminates.

STEP	CHECK	YES	NO
1.CHECK TIRES. Lift up the vehicle and check for damage in the tires.	Are there cracks or damage-	Replace the tire.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2024 TIRE 4 AIR PRESSURE LOW (NORMAL MODE)
2.CHECK TIRES. Check the tire air pressure.	Is the tire pressure in the specifications-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2024 TIRE 4 AIR PRESSURE LOW (NORMAL MODE)	Adjust the air pressure.
3.CHECK TRANSMITTER DATA. 1) Drive at 40 km/h (25 MPH) or more. 2) Confirm the current data «Tire 1 air pressure»«Tire 2 air pressure»«Tire 3 air pressure»«Tire 4 air pressure» of the tire pressure monitor. Read Current Data	Is there a transmitter with different display-	Replace the transmitter (tire pressure sensor) with different display. Tire Pressure Monitoring System	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2024 TIRE 4 AIR PRESSURE LOW (NORMAL MODE)
4.PERFORM DRIVING TEST. 1) Perform the Clear Memory Mode. Clear Memory Mode > OPERATION 2) Perform a driving test. Inspection Mode > PROCEDURE 3) Read the DTC of tire pressure monitoring. Read Diagnostic Trouble Code (DTC)	Is the same DTC displayed-	Replace the TPMS & keyless entry CM or TPMS CM. Tire Pressure Monitoring System	Even if the DTC is displayed, the system has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

CAUTION:

When driving vehicle to perform driving test, there should be always 2 persons (driver and checker) to check.

Dtc c2121 transmitter 1 no data

NOTE:Refer to DTC C2124 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2124 TRANSMITTER 4 NO DATA ...

Dtc c2023 tire 3 air pressure low (normal mode)

NOTE:Refer to DTC C2024 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2024 TIRE 4 AIR PRESSURE LOW (NORMAL MODE) ...

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