Engine-Codes - Saturn - B0234 SATURN

B0234 SATURN Code - Air Mix Door Range Error

Repair Importance Level: 1/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

|B0234 SATURN code possible causes

  • Faulty Air Mix Actuator
  • Air Mix Actuator harness is open or shorted
  • Air Mix Actuator circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

|How is the B0234 SATURN 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 B0234 SATURN code

Labor: 1.0

The cost to diagnose the B0234 SATURN 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 B0234 SATURN code possible symptoms?

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

|What is B0234 SATURN code meaning?

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the HVAC controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the Heating, Ventilation, and Air Conditioning (HVAC) Control Module via serial data. The HVAC control module supplies a 12 V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors move the appropriate doors into the calculated positions, in order to reach the desired positions.

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