Engine-Codes - Generic - B2458

B2458 Code - Auxiliary Heater Overheat Sensor Circuit Short to Ground

- Code Popularity: 4,507 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 B2458?

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 Overheat Sensor
  • Auxiliary Heater Overheat Sensor harness is open or shorted
  • Auxiliary Heater Overheat Sensor circuit poor electrical connection
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How to Fix the DTC B2458?

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 B2458 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 B2458 Code Mean?

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

B2458 Code - Auxiliary Heater Overheat Sensor Circuit Short to Ground

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