C15D6 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C15D6 – Run Flat Tire Pressure Below Threshold
C15D6 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C15D6 Possible Causes
Low Tire Pressure,Faulty Tire Pressure Monitoring (TPM) Sensor
This diagnostic runs continuously when the following conditions are met: Ignition on, System voltage between 10.0 and 16.0 volts, and the engine run time above 3 seconds. The Tire Pressure Monitoring (TPM) Module sets the OBDII code when it receives a valid RF Message from a TPM sensor equipped to a road tire (i.e. not the spare) where the pressure value is approximately 14.5 PSI below the placard pressure of the axle to which the sensor has been located.