MasterTuning Fault code dictionary (DTC)

B1820 — Wiper Rear Motor Up Relay Coil Circuit Short To Battery

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningWiper Rear Motor Up Relay Coil Circuit Short To Battery.
FamilyBody (B)

Frequently asked questions

What does code B1820 mean?

Wiper Rear Motor Up Relay Coil Circuit Short To Battery. Wiper Rear Motor Up Relay Coil Circuit Short To Battery.

Can I keep driving with code B1820 active?

With caution: limp mode possible, have it checked soon

How do you fix code B1820?

Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.

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Where to get it fixed

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