C1527 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1527 – Gear R Switch Error


C1527 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1527 Possible Causes


Faulty Gear R Switch,Gear R Switch harness is open or shorted,Gear R Switch circuit poor electrical connection,Faulty Back-up Lamp Switch


C1527 Description


If the wrong reverse gear signal has been set for a certain period of time, a failure is recognized. [A/T] Hydraulic Electronic Control Unit (HECU) receives reverse gear switch signal from TCM via C-CAN. [M/T] Cluster receives back up lamp signal from IPS (Intelligent Power Switch System) via B-CAN and sends it to HECU via C-CAN. The HECU monitors the Gear R Switch (Transaxle Range Switch). The HECU sets the OBDII code when the Gear R Switch is not to factory specifications.