Engine-Codes - Generic - B1231

B1231 Code - Open In The Evaporator Temperature Sensor Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B1231 code possible causes

  • Faulty Evaporator Temperature Sensor
  • Evaporator Temperature Sensor harness is open or shorted
  • Evaporator Temperature Sensor circuit poor electrical connection
  • Faulty Climate Control Unit

|How is the B1231 code repair?

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.

|What is the cost to diagnose the B1231 code

Labor: 1.0

The cost to diagnose the B1231 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.

|What are B1231 code possible symptoms?

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

|What is B1231 code meaning?

The Climate Control Unit monitors the Evaporator Temperature Sensor. The Climate Control Unit sets the OBDII code when the Evaporator Temperature Sensor is not to factory specifications.

|Need more information with the B1231 code?

Need more information on how to fix the B1231 code?
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|B1231 code information for specific makes

|Need help with a B1231 code?

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