B1345 Mercury 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 Mercury 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 Mercury Description
What are the Possible Causes of the DTC B1345 Mercury?
- 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 Mercury?
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 Mercury 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 Mercury Code
1. What are the common symptoms of OBDII code B1345 in a Mercury related to the Heated Backlite Input Circuit Short to Ground?
The common symptoms include a non-functional rear defroster, a blown fuse in the rear defroster circuit, and potentially a check engine light being illuminated.
2. What are the possible causes of the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground?
Possible causes include a short circuit in the wiring harness, a faulty rear defroster switch, a damaged rear defroster grid, or a malfunctioning body control module.
3. How can I diagnose the OBDII code B1345 in my Mercury for the Heated Backlite Input Circuit Short to Ground?
To diagnose this code, you can use a multimeter to check for continuity and resistance in the rear defroster circuit, visually inspect the wiring and defroster grid for any damage, and scan the vehicle's computer for additional fault codes.
4. Are there any simple repair tips for fixing the OBDII code B1345 related to the Heated Backlite Input Circuit Short to Ground in a Mercury?
Some simple repair tips include checking and replacing any blown fuses, repairing any damaged wiring or grid elements, and resetting the fault code after completing the repairs.
5. Can driving with the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground cause any further damage to the vehicle?
Continuing to drive with this code may lead to a non-functional rear defroster, reduced visibility through the rear window in cold or humid conditions, and potential damage to the rear defroster components.
6. Is it safe to attempt to fix the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground issue on my own?
If you have experience working with automotive electrical systems and feel confident in your abilities, you can attempt to diagnose and repair this issue on your own. However, if you are unsure, it is recommended to seek professional help.
7. How much does it typically cost to repair the OBDII code B1345 related to the Heated Backlite Input Circuit Short to Ground in a Mercury?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.
8. Can extreme weather conditions contribute to triggering the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground?
Extreme cold or hot weather conditions can potentially exacerbate issues with the rear defroster circuit, leading to a higher likelihood of triggering this fault code.
9. Will disconnecting the battery reset the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground?
Disconnecting the battery may temporarily clear the fault code, but if the underlying issue causing the code is not addressed and repaired, the code is likely to return after a certain period of driving.
10. Can moisture or water ingress into the rear defroster system cause the OBDII code B1345 Mercury Heated Backlite Input Circuit Short to Ground?
Yes, moisture or water ingress into the rear defroster system can potentially cause a short circuit or corrosion in the wiring, leading to the triggering of this fault code.
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