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AutoCodes - Generic - B2452

B2452 Code - Auxiliary Heater Fuel Pump Circuit Open

- Code Popularity: 5,656 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2452?

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 Auxiliary Heater Fuel Pump
  • Auxiliary Heater Fuel Pump harness is open or shorted
  • Auxiliary Heater Fuel Pump circuit poor electrical connection
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How to Fix the DTC B2452?

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 B2452 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?

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

Code B2452 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 B2452 - Auxiliary  Heater Fuel Pump Circuit Open - AutoCodes.com
B2452 Code - Auxiliary Heater Fuel Pump Circuit Open

Need More Information on the Code?

Need more information on how to fix the B2452 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • B2452 Lexus Height Control Sensor Data Out Of Range When Initializing
  • B2452 Scion Height Control Sensor Data Out Of Range When Initializing
  • B2452 Toyota Height Control Sensor Data Out Of Range When Initializing

Need Help with the Code?

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Code B2452 comments

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