AutoCodes – GMC – B305E GMC

B305E GMC Code - Interruptible RAP Relay Circuit

Quick Answer

The Keyless Entry Control Module controls the retained accessory power relays through the control circuit by applying voltage to the interruptible retained accessory power relay coil control circuit. Common causes include Faulty Retained Accessory Power Relay, Retained Accessory Power Relay harness is open or shorted, Retained Accessory Power Relay 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
B305E GMC indicates Interruptible RAP Relay Circuit.
Common causes
Common causes include Faulty Retained Accessory Power Relay, Retained Accessory Power Relay harness is open or shorted, Retained Accessory Power Relay 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 893
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 03, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code B305E GMC Description

The Keyless Entry Control Module controls the retained accessory power relays through the control circuit by applying voltage to the interruptible retained accessory power relay coil control circuit. The Retained Accessory Power Relays are energized when the ignition is in the ACCESSORY or the ON position. The relays are also energized for approximately 10 min after shutting the ignition OFF, providing no door is opened.
OBDII Code B305E GMC - Interruptible RAP Relay Circuit - AutoCodes.com
B305E GMC Code - Interruptible RAP Relay Circuit

What are the Possible Causes of the DTC B305E GMC?

  • Faulty Retained Accessory Power Relay
  • Retained Accessory Power Relay harness is open or shorted
  • Retained Accessory Power Relay circuit poor electrical connection
  • Faulty Keyless Entry Control Module

How to Fix the DTC B305E 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 B305E 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 B305E GMC code?

Need more information on how to fix the B305E GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B305E 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 B305E GMC Code

1. What are the common symptoms of OBDII code B305E GMC (Interruptible RAP Relay Circuit)?

- Common symptoms include power door locks not functioning properly, interior lights not turning on or off correctly, and issues with the radio staying on when the ignition is turned off.

2. What can cause the OBDII code B305E GMC to trigger?

- The code B305E GMC is typically triggered by a fault in the Interruptible Retained Accessory Power (RAP) relay circuit, which may be caused by a faulty relay, wiring issues, or a malfunctioning control module.

3. How can I diagnose the Interruptible RAP Relay Circuit issue?

- Diagnosing the issue involves checking the RAP relay and related wiring for any signs of damage, testing the relay for proper functionality, and using a scan tool to read the trouble codes stored in the vehicle's computer.

4. What are some repair tips for fixing the Interruptible RAP Relay Circuit problem?

- Repair tips include replacing the faulty RAP relay, repairing any damaged wiring, ensuring proper connections, and clearing the trouble codes from the vehicle's computer after repairs are completed.

5. Can I drive my vehicle with the OBDII code B305E GMC active?

- It is generally safe to drive the vehicle with the B305E code, but it is recommended to address the issue promptly to prevent potential problems with the door locks, interior lights, or other electrical components.

6. Does the Interruptible RAP Relay Circuit issue affect vehicle safety?

- While the B305E code may not directly impact the safety of driving the vehicle, it can lead to inconvenience and potential issues with the proper functioning of essential electrical systems in the vehicle.

7. How much does it typically cost to repair the Interruptible RAP Relay Circuit problem?

- The cost of repairing the Interruptible RAP Relay Circuit issue can vary depending on the extent of the problem, the parts needed for repair, and whether you choose to do the repairs yourself or take the vehicle to a mechanic.

8. Can I reset the OBDII code B305E GMC without fixing the underlying issue?

- While you can clear the trouble code using a scan tool, the underlying issue with the Interruptible RAP Relay Circuit will persist until properly diagnosed and repaired.

9. Is the Interruptible RAP Relay Circuit problem a common issue in GMC vehicles?

- The B305E code related to the Interruptible RAP Relay Circuit is not uncommon in GMC vehicles, especially in models equipped with advanced accessory control systems.

10. How long does it typically take to repair the Interruptible RAP Relay Circuit issue?

- The repair time for the Interruptible RAP Relay Circuit problem can vary depending on the complexity of the issue, the availability of parts, and your level of experience with automotive repairs. It may range from a few hours to a day in some cases.

Discuss the causes and fixes for B305E GMC OBDII Code

Code B305E GMC comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play