B1818 - Wiper Rear Motor Up Relay Coil Circuit Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Wiper Rear Motor Up Relay
  • Wiper Rear Motor Up Relay harness is open or shorted
  • Wiper Rear Motor Up Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1818 Description

The Body Control Module (BCM) monitors the Wiper Rear Motor Up Relay. The BCM sets the OBDII code when the Wiper Rear Motor Up Relay is not to factory specifications.
OBDII Code B1818 - Wiper Rear Motor Up Relay Coil Circuit Failure - AutoCodes.com

B1818 Information for specific makes

  • B1818 CHRYSLER Rear Passenger Door Ajar Circuit Short
  • B1818 DODGE Rear Passenger Door Ajar Circuit Short
  • B1818 JEEP Rear Passenger Door Ajar Circuit Short
  • B1818 LEXUS Short To Positive In Front Passenger Side Squib 2nd Step Circuit
  • B1818 RAM Rear Passenger Door Ajar Circuit Short
  • B1818 SCION Short To Positive In Front Passenger Side Squib 2nd Step Circuit
  • B1818 TOYOTA Short To Positive In Front Passenger Side Squib 2nd Step Circuit

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B1818 Comments

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