Engine-Codes - Generic - B2509

B2509 Code - Rear Fog Lamp Switch Circuit Failure

- Code Popularity: 4,361 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B2509?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Rear Fog Lamp Switch
  • Rear Fog Lamp Switch harness is open or shorted
  • Rear Fog Lamp Switch circuit poor electrical connection
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How to Fix the DTC B2509?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B2509 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B2509 Code Mean?

The Body Control Module (BCM) monitors the Rear Fog Lamp Switch. The BCM sets the OBDII code when the Rear Fog Lamp Switch is not to factory specifications.

B2509 Code - Rear Fog Lamp Switch Circuit Failure

Need more Information on the Code?

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Code B2509 Information for Specific Makes

  • B2509 Chrysler Left Power Sliding Door Latch Release Pawl Switch Performance
  • B2509 Dodge Left Power Sliding Door Latch Release Pawl Switch Performance
  • B2509 Lexus Short In Pulse Width Modulation Motor Right Circuit
  • B2509 RAM Left Power Sliding Door Latch Release Pawl Switch Performance

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