Engine-Codes - Generic - B1859

B1859 Code - Climate Control A/C Pressure Switch Circuit Open

- Code Popularity: 4,109 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the Code B1859?

  • Faulty Climate Control A/C Pressure Switch
  • Climate Control A/C Pressure Switch harness is open or shorted
  • Climate Control A/C Pressure Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the B1859 Code?

Start by checking 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.

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What is the Cost to Diagnose the Code B1859?

Labor: 1.0

The cost to diagnose the B1859 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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What are Code B1859 Possible Symptoms?

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

What Does the B1859 Code Mean?

The Body Control Module (BCM) monitors the Climate Control A/C Pressure Switch. The BCM sets the OBDII code when the Climate Control A/C Pressure Switch is not to factory specifications.

B1859 Code - Climate Control A/C Pressure Switch Circuit Open

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