AutoCodes – GMC – B0419 GMC

B0419 GMC Code - Temperature Control 2 Circuit Range

Quick Answer

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. Common causes include Faulty Right Air Temperature Actuator, Right Air Temperature Actuator harness is open or shorted, Right Air Temperature Actuator circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0419 GMC indicates Temperature Control 2 Circuit Range.
Common causes: Common causes include Faulty Right Air Temperature Actuator, Right Air Temperature Actuator harness is open or shorted, Right Air Temperature Actuator circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 992

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0419 GMC Description

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.

OBDII Code B0419 GMC - Temperature Control 2 Circuit Range - AutoCodes.com — B0419 GMC Code - Temperature Control 2 Circuit Range

What does this mean?

What are the Possible Causes of the DTC B0419 GMC?

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

How to Fix the DTC B0419 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0419 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0419 GMC Code

1. What are the common symptoms of OBDII code B0419 GMC related to Temperature Control 2 Circuit Range?

- Common symptoms include inconsistent or inaccurate temperature readings on the vehicle's climate control system and issues with regulating the interior temperature.

2. What are the possible causes of OBDII code B0419 GMC?

- Possible causes may include a faulty temperature control sensor, wiring issues, a malfunctioning HVAC control module, or a problem with the climate control system's software.

3. How can I diagnose the OBDII code B0419 GMC?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, inspecting the temperature control sensor and its wiring for any damage, and testing the HVAC control module for proper operation.

4. What are some repair tips for resolving OBDII code B0419 GMC?

- Repair tips may include checking and repairing any damaged wiring, replacing the temperature control sensor if faulty, reprogramming the HVAC control module, or resetting the climate control system.

5. Can I continue driving my vehicle with OBDII code B0419 GMC present?

- It is generally not recommended to drive with this code present, as it can affect the proper functioning of the climate control system and lead to discomfort while driving.

6. How much does it typically cost to repair OBDII code B0419 GMC?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $300 for parts and labor.

7. Will OBDII code B0419 GMC cause any long-term damage to my vehicle?

- While the code itself may not cause immediate damage, ignoring the underlying issue with the temperature control system can lead to further complications and potentially affect other components in the long run.

8. Are there any DIY fixes for OBDII code B0419 GMC?

- DIY fixes may include checking and cleaning the temperature control sensor connections, inspecting and repairing damaged wiring, and resetting the climate control system.

9. How long does it take to repair OBDII code B0419 GMC?

- The repair time can vary based on the specific cause of the code and the complexity of the repair, but it may take anywhere from 1 to 3 hours at a repair shop.

10. Can OBDII code B0419 GMC be intermittent or sporadic?

- Yes, this code can sometimes appear intermittently, especially if the underlying issue is related to loose connections or intermittent sensor failures.