AutoCodes – GMC – B1433 GMC

B1433 GMC Code - Ignition Switched Power Relay 2 Circuit

Quick Answer

The Body Control Module (BCM) supplies voltage to the HVAC module and the windshield washer solvent heater. Common causes include Faulty Ignition Switched Power Relay 2, Ignition Switched Power Relay 2 harness is open or shorted, Ignition Switched Power Relay 2 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1433 GMC indicates Ignition Switched Power Relay 2 Circuit.
Common causes: Common causes include Faulty Ignition Switched Power Relay 2, Ignition Switched Power Relay 2 harness is open or shorted, Ignition Switched Power Relay 2 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,656

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1433 GMC Description

The Body Control Module (BCM) supplies voltage to the HVAC module and the windshield washer solvent heater. Voltage is applied when any of the following conditions are true: Ignition Switch is in ACC or RUN, the vehicle was remote started, the vehicle is in Retained Accessory Power (RAP) mode. The Diagnostic Trouble Code (DTC) will set only when the module requests the output and there is a short to ground in the run relay coil control circuit.

OBDII Code B1433 GMC - Ignition Switched Power Relay 2 Circuit - AutoCodes.com — B1433 GMC Code - Ignition Switched Power Relay 2 Circuit

What does this mean?

What are the Possible Causes of the DTC B1433 GMC?

Faulty Ignition Switched Power Relay 2
Ignition Switched Power Relay 2 harness is open or shorted
Ignition Switched Power Relay 2 circuit poor electrical connection

How to Fix the DTC B1433 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 B1433 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.

Need more information about the B1433 GMC code?

Need more information on how to fix the B1433 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1433 GMC code diagnosed by a professional: Find a repair shop in your area

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 B1433 GMC Code

1. What are the common symptoms of OBDII code B1433 GMC related to the Ignition Switched Power Relay 2 Circuit?

- Common symptoms include intermittent or complete loss of power to certain electrical components controlled by the relay.

2. What can cause OBDII code B1433 GMC to trigger for the Ignition Switched Power Relay 2 Circuit?

- The code may be triggered by a faulty relay, damaged wiring, or a poor connection in the circuit.

3. How can I diagnose the cause of OBDII code B1433 GMC for the Ignition Switched Power Relay 2 Circuit?

- You can use a multimeter to test the relay, inspect the wiring for any damage, and check for loose connections in the circuit.

4. Is it safe to continue driving with OBDII code B1433 GMC related to the Ignition Switched Power Relay 2 Circuit?

- It is not recommended to drive with this code as it may lead to unexpected loss of power while driving.

5. Can I reset OBDII code B1433 GMC for the Ignition Switched Power Relay 2 Circuit on my own?

- Yes, you can reset the code using an OBDII scanner, but it is important to diagnose and fix the underlying issue to prevent it from recurring.

6. What are some repair tips for addressing OBDII code B1433 GMC for the Ignition Switched Power Relay 2 Circuit?

- Start by checking the relay for functionality, inspect all related wiring, and ensure all connections are secure and free of corrosion.

7. How do I replace the Ignition Switched Power Relay 2 Circuit to resolve OBDII code B1433 GMC in a GMC vehicle?

- To replace the relay, locate its position in the fuse box, carefully remove the old relay, and install a new one following the manufacturer's instructions.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B1433 GMC for the Ignition Switched Power Relay 2 Circuit?

- Yes, with some basic tools and knowledge, you can troubleshoot and potentially fix the issue related to this code.

9. Are there any recalls or technical service bulletins related to OBDII code B1433 GMC for the Ignition Switched Power Relay 2 Circuit?

- It's recommended to check with the manufacturer or a reliable automotive source for any recalls or bulletins related to this specific OBDII code.

10. How can I prevent OBDII code B1433 GMC from occurring again in the future after repair?

- Regularly inspecting and maintaining the electrical components in the circuit, such as the relay and wiring, can help prevent the code from reoccurring.