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AutoCodes - Generic - B2451

B2451 Code - Auxiliary Heater Fuel Pump Circuit Short to Ground

- Code Popularity: 3,776 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Dec 08, 2019
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|Code B2451 Possible Causes

  • Faulty Auxiliary Heater Fuel Pump
  • Auxiliary Heater Fuel Pump harness is open or shorted
  • Auxiliary Heater Fuel Pump circuit poor electrical connection

|How do I Fix the Code B2451?

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's pins.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B2451?

Labor: 1.0

The cost of diagnosing the B2451 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B2451 Possible Symptoms?

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

|Code B2451 Description

The Powertrain Control Module (PCM) monitors the Auxiliary Heater Fuel Pump. The PCM sets the OBDII code when the Auxiliary Heater Fuel Pump is not to factory specifications.

OBDII Code B2451 - Auxiliary Heater Fuel Pump Circuit Short to Ground -
B2451 Code - Auxiliary Heater Fuel Pump Circuit Short to Ground

|Need More Information on the B2451 Code?

Need more information on how to fix the B2451 code? Get Access to Factory Service Manuals

|Need Help with the B2451 Code?

Get the B2451 code diagnosed by a professional: Find a repair shop in your area

|Code B2451 comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B2451 code? Have you replaced any parts?
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