B1345 Lincoln Code - Heated Backlite Input Circuit Short to Ground
Quick Answer
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. Common causes include Faulty Heated Rear Window Relay, Faulty Heated Rear Window Switch, Faulty Heated Rear Window Grid. 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 Lincoln indicates Heated Backlite Input Circuit Short to Ground.
- Common causes
- Common causes include Faulty Heated Rear Window Relay, Faulty Heated Rear Window Switch, Faulty Heated Rear Window Grid.
- 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.
Code B1345 Lincoln Description
What are the Possible Causes of the DTC B1345 Lincoln?
- Faulty Heated Rear Window Relay
- Faulty Heated Rear Window Switch
- Faulty Heated Rear Window Grid
- Faulty Smart Junction Box (SJB)
How to Fix the DTC B1345 Lincoln?
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 B1345 Lincoln 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.
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Frequently Asked Questions about B1345 Lincoln Code
1. What are the common symptoms of OBDII code B1345 in a Lincoln related to the Heated Backlite Input Circuit Short to Ground?
- Common symptoms include a non-functional rear defroster, the rear defroster not clearing the window frost, or a blown fuse related to the rear defroster.
2. What are the potential causes of the Heated Backlite Input Circuit Short to Ground in a Lincoln triggering code B1345?
- The most common causes include damaged wiring in the rear defroster circuit, a faulty rear defroster switch, or a malfunctioning rear defroster relay.
3. How can I diagnose the Heated Backlite Input Circuit Short to Ground issue in my Lincoln causing OBDII code B1345?
- To diagnose this issue, you can perform a visual inspection of the rear defroster wiring, test the rear defroster switch and relay for continuity, and use a multimeter to check for short circuits.
4. Can I continue driving my Lincoln with the OBDII code B1345 related to the Heated Backlite Input Circuit Short to Ground?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the rear defroster functions correctly, especially in cold or wet conditions.
5. How can I repair the Heated Backlite Input Circuit Short to Ground problem in my Lincoln and clear the OBDII code B1345?
- The repair may involve repairing or replacing damaged wiring, replacing the rear defroster switch or relay if faulty, and clearing the code using an OBDII scanner after the repair is completed.
6. Are there any DIY tips for troubleshooting the Heated Backlite Input Circuit Short to Ground issue in a Lincoln with code B1345?
- DIY tips include checking fuses related to the rear defroster, inspecting the wiring for any visible damage, and testing the rear defroster components for proper functionality using a multimeter.
7. How much does it typically cost to repair the Heated Backlite Input Circuit Short to Ground problem causing OBDII code B1345 in a Lincoln?
- The cost of repair can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor if professional help is required.
8. What are the long-term effects of ignoring the Heated Backlite Input Circuit Short to Ground issue in a Lincoln triggering OBDII code B1345?
- Ignoring this issue may result in the rear defroster not working when needed, leading to poor visibility through the rear window during adverse weather conditions.
9. Can extreme weather conditions contribute to the Heated Backlite Input Circuit Short to Ground problem in a Lincoln and trigger code B1345?
- Yes, extreme cold or wet weather conditions can exacerbate existing issues with the rear defroster circuit, potentially leading to a short to ground and triggering the OBDII code B1345.
10. Is the Heated Backlite Input Circuit Short to Ground issue causing OBDII code B1345 a common problem in Lincoln vehicles?
- Yes, this issue is relatively common in Lincoln vehicles, especially in older models where the rear defroster circuit may have degraded over time.
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