B2874
Right Reverse Lamp 2 Control Circuit Short
B2874 is an OBD-II diagnostic trouble code meaning: Right Reverse Lamp 2 Control Circuit Short. Common causes: short circuit in rear bumper wiring harness, damage to wire insulation. Estimated repair cost: $22–89.
Symptoms
- The right reverse lamp does not work
- The warning light on the dashboard is on
- The error code is fixed when reverse gear is engaged
- Periodic flashing of the reverse lamp
Causes
- Short circuit in rear bumper wiring harness
- Damage to wire insulation
- Oxidation or short circuit in the lamp connector
- Body Control Module (BCM) Malfunction
- Moisture getting into the lamp unit
How to Fix
- Read error codes with a scanner and record the data
- Visually inspect the rear bumper wiring harness for damage.
- Check the right reverse lamp connector for oxidation and short circuit.
- Measure the circuit resistance with a multimeter
- Eliminate short circuit or replace damaged section of wiring
- Reset the error code and check the lamp operation
Related codes
FAQ
What does the B2874 code mean?
B2874 is an OBD-II diagnostic trouble code that indicates: Right Reverse Lamp 2 Control Circuit Short
What causes a B2874 error code?
The most common causes of B2874 include: Short circuit in rear bumper wiring harness; Damage to wire insulation; Oxidation or short circuit in the lamp connector; Body Control Module (BCM) Malfunction.
How do I fix a B2874 diagnostic trouble code?
To fix B2874: Read error codes with a scanner and record the data. Visually inspect the rear bumper wiring harness for damage.. Check the right reverse lamp connector for oxidation and short circuit.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2874?
Yes, but get it checked soon
How much does it cost to fix B2874?
The estimated repair cost for B2874 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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