B2045
Left Rear Stop Lamp Circuit Open
B2045 is an OBD-II diagnostic trouble code meaning: Left Rear Stop Lamp Circuit Open. Common causes: broken wire in the wiring harness, burnt out brake light bulb. Estimated repair cost: $6–56.
Symptoms
- Left rear brake light does not work
- The malfunction indicator on the dashboard is on
- Possible errors in other lighting systems
Causes
- Broken wire in the wiring harness
- Burnt out brake light bulb
- Contact corrosion in the lamp socket
- Faulty brake light relay
- Problems with the control unit
How to Fix
- Check the integrity of the left rear brake light bulb
- Inspect the wiring harness for damage
- Check the contacts in the lamp socket for corrosion.
- Test relays and fuses
- Replace damaged components if necessary
- Reset the error and check for its reappearance
Related codes
FAQ
What does the B2045 code mean?
B2045 is an OBD-II diagnostic trouble code that indicates: Left Rear Stop Lamp Circuit Open
What causes a B2045 error code?
The most common causes of B2045 include: Broken wire in the wiring harness; Burnt out brake light bulb; Contact corrosion in the lamp socket; Faulty brake light relay.
How do I fix a B2045 diagnostic trouble code?
To fix B2045: Check the integrity of the left rear brake light bulb. Inspect the wiring harness for damage. Check the contacts in the lamp socket for corrosion.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2045?
Do not drive — repair immediately
How much does it cost to fix B2045?
The estimated repair cost for B2045 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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