AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Mercury - B1348 Mercury

B1348 Mercury Code - Heated Backlite Relay Circuit Open

- Code Popularity: 614 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC B1348 Mercury?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Heated Rear Window Relay
  • Faulty Heated Rear Window Switch
  • Faulty Heated Rear Window Grid
  • Faulty Smart Junction Box (SJB)
⚠ Does your Mercury have Safety Recalls? → Check here

How to Fix the DTC B1348 Mercury?

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

Search for B1348 Mercury Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1348 Mercury code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B1348 Mercury Description

When the rear defrosts switch on the climate control assembly is pressed, a ground signal is sent to the Smart Junction Box (SJB) on the circuit. The SJB then grounds circuit. This energizes the heated rear window relay, allowing voltage to be supplied to the heated rear window grid through the circuit. The OBDII code sets when the Heated Backlite Input is not to factory specifications.

OBDII Code B1348 Mercury - Heated Backlite Relay Circuit Open - AutoCodes.com
B1348 Mercury Code - Heated Backlite Relay Circuit Open

Need More Information on the Code?

Need more information on how to fix the B1348 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1348 Mercury code diagnosed by a professional: Find a repair shop in your area

Code B1348 Mercury comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B1348 Mercury code? Have you replaced any parts?
Any information is appreciated. Thanks