B0502

Open Or Short To Ground In The RH DRL Relay Control Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–89 (est.)

Symptoms

Right DRL does not work
Right DRL flashing
The malfunction indicator on the instrument panel lights up

Causes

Broken wire in the control circuit
Short circuit to ground
Faulty DRL relay
Wiring harness damage
Oxidation of contacts
Control unit malfunction

How to Fix

Check the integrity of the right DRL relay control circuit
Measure resistance and voltage at test points
Inspect the wiring harness for damage
Check relay and control unit contacts
Replace relay if necessary
Repair damaged wires or replace the harness

Related codes

B0501 B0503 B0504