Engine-Codes - Cadillac - B0507 Cadillac

B0507 Cadillac Code - Open Or Short To Ground In The LH DRL Relay Control Circuit

- Code Popularity: 1,087 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code B0507 Cadillac?

  • Faulty Left Daylight Running Lamp (DRL) Relay
  • Left Daylight Running Lamp (DRL) Relay harness is open or shorted
  • Left Daylight Running Lamp (DRL) Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

|How to Fix the B0507 Cadillac Code?

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 Code B0507 Cadillac?

Labor: 1.0

The cost to diagnose the B0507 Cadillac 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.

Does your car have Safety Recalls? → Check here

|What are Code B0507 Cadillac Possible Symptoms?

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

|What Does the B0507 Cadillac Code Mean?

The Body Control Module (BCM) provides control for the LH DRL relay circuit. The BCM grounds the Left Daylight Running Lamp (DRL) relay control circuit in order to energize the LH DRL relay and turn ON the LF turn signal This allows the LF turn signal to be used for DRL and approach lighting functions. The BCM monitors the voltage level on the LH DRL relay control circuit. When the BCM commands the relay ON, the voltage level on the LH DRL relay control circuit should be low. When the relay is OFF, the voltage on the LH DRL relay control circuit should be high. If the BCM detects a voltage level other than expected, a malfunction is present and a Diagnostic Trouble Code (DTC) will set.

Open Or Short To Ground In The LH DRL Relay Control Circuit

|Need more Information on the B0507 Cadillac Code?

Need more information on how to fix the B0507 Cadillac code? Get Access to Factory Service Manuals

|Need Help with the B0507 Cadillac Code?

Get the B0507 Cadillac code diagnosed by a professional: Find a repair shop in your area