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B1345 Ford Code - Heated Backlite Input Circuit Short to Ground

Quick Answer

The B1345 Ford code indicates a problem with the Heated Backlite Input Circuit being shorted to ground. Common causes include Damaged wiring harness, Faulty switch or relay, Malfunctioning control module. 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
B1345 Ford indicates Heated Backlite Input Circuit Short to Ground.
Common causes
Common causes include Damaged wiring harness, Faulty switch or relay, Malfunctioning control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code B1345 Ford Description

The B1345 Ford code indicates a problem with the Heated Backlite Input Circuit being shorted to ground. The heated backlite, or rear window defroster, is an important feature in vehicles, especially in colder climates. When this circuit is shorted to ground, it means that there is an unintended connection between the heated backlite system and the vehicle's chassis or ground. This can lead to various issues with the functionality of the rear window defroster.

OBDII Code B1345 Ford - Heated Backlite Input Circuit Short to Ground
B1345 Ford Code - Heated Backlite Input Circuit Short to Ground

Common Causes of B1345 Ford

  1. Damaged wiring harness
  2. Faulty switch or relay
  3. Malfunctioning control module
  4. Problem with the backlite itself
  5. Corrosion or poor connections in the circuit

Symptoms of B1345 Ford

  1. Rear window defroster not working
  2. Fuse for rear window defroster blowing repeatedly
  3. Rear window defroster working intermittently
  4. Dashboard warning light indicating a problem with the rear window defroster

How to Fix B1345 Ford

  1. Begin by inspecting the wiring harness for any visible damage or signs of wear. Repair or replace any damaged wires.
  2. Check the switch and relay for proper operation. Test and replace if necessary.
  3. Test the control module to ensure it is functioning correctly. Replace if found to be faulty.
  4. Inspect the backlite for any damage or defects. Replace if needed.
  5. Clear the diagnostic trouble codes and test the rear window defroster to ensure it is functioning properly.

Cost to Fix B1345 Ford

The cost of repairing a Heated Backlite Input Circuit short to ground can vary depending on the specific cause of the issue and the extent of the damage. On average, the repair cost for this type of problem can range from $100 to $300 for parts and labor. However, it is important to note that labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate. Additionally, the cost of any necessary replacement parts will also affect the total repair cost.

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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 B1345 Ford Code

1. What does the OBDII code B1345 mean on a Ford vehicle?

The B1345 code indicates a problem in the Heated Backlite Input Circuit, specifically a short to ground.

2. What are the common symptoms of the B1345 code?

Symptoms may include the rear defroster not functioning, a blown fuse, or warning lights on the dashboard.

3. What causes the B1345 Heated Backlite Input Circuit Short to Ground?

Common causes include damaged wiring, a faulty rear defroster switch, or a shorted rear window heating grid.

4. Can I drive my Ford with the B1345 code?

Yes, but the rear defroster may not work, which could reduce visibility in cold or rainy conditions.

5. How do you diagnose the B1345 code?

A technician will inspect the wiring and connectors for damage, test the rear defroster switch, and check for continuity in the circuit.

6. How can I fix the B1345 code on my Ford?

Repairs may involve replacing or repairing damaged wiring, fixing a shorted rear defroster grid, or replacing a faulty switch.

7. Can a blown fuse cause the B1345 code?

Yes, a blown fuse in the rear defroster circuit can result in this code being triggered.

8. How much does it cost to repair the B1345 code?

Repair costs vary depending on the issue but typically range from $50 for a fuse replacement to $500 for a new rear window.

9. Is the B1345 code specific to Ford vehicles?

While the code is commonly associated with Ford, other manufacturers may have similar codes for rear defroster issues.

10. Can a DIYer fix the B1345 code?

Yes, if you're comfortable inspecting and repairing wiring or replacing components, but professional help may be needed for complex issues.

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