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AutoCodes - Generic - B2500

B2500 Code - Courtesy Lamp Output Check Short To Battery

- Code Popularity: 11,776 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2500?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Burnt-out Air Bag Warning Lamp
  • Faulty Air Bag Warning Lamp
  • Air Bag Warning Lamp harness is open or shorted
  • Air Bag Warning Lamp circuit poor electrical connection
  • Faulty Supplemental Restraints System Control Module (SRSCM)
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How to Fix the DTC B2500?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2500 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

Code B2500 Description

The Air Bag Warning Lamp is located at the instrument cluster. When the key is in the ignition in the ON position, the Supplemental Restraints System Control Module (SRSCM) performs a diagnosis of the overall airbag system. If there's no fault, airbag. Warning lamp in the cluster flickers for a while and then goes out. SRSCM measures the voltage of the out terminal of the warning lamp to check if the warning lamp is operated in accordance with the signal SRSCM sends.

OBDII Code B2500 - Courtesy Lamp Output Check Short To Battery - AutoCodes.com
B2500 Code - Courtesy Lamp Output Check Short To Battery

Need More Information on the Code?

Need more information on how to fix the B2500 code? Get Access to Factory Service Manuals

Information for Specific Makes

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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