B1204 Mercury Code - Fuel Sender Circuit Short To Ground
Quick Answer
The fuel pump module is hardwired to the Instrument Cluster (IC). Common causes include Faulty Fuel Level Sensor Unit, Fuel Level Sensor Unit harness is open or shorted, Fuel Level Sensor Unit circuit poor electrical connection. 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
- B1204 Mercury indicates Fuel Sender Circuit Short To Ground.
- Common causes
- Common causes include Faulty Fuel Level Sensor Unit, Fuel Level Sensor Unit harness is open or shorted, Fuel Level Sensor Unit circuit poor electrical connection.
- 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 B1204 Mercury Description
What are the Possible Causes of the DTC B1204 Mercury?
- Faulty Fuel Level Sensor Unit
- Fuel Level Sensor Unit harness is open or shorted
- Fuel Level Sensor Unit circuit poor electrical connection
How to Fix the DTC B1204 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 B1204 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.
Need more information about the B1204 Mercury code?
Need more information on how to fix the B1204 Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1204 Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1204 Mercury Code
1. What are the common symptoms of OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- Common symptoms include inaccurate fuel gauge readings, fluctuating fuel gauge readings, or a fuel gauge that remains stuck at a certain level.
2. What are the possible causes of the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- Possible causes include a short to ground in the fuel sender circuit, a faulty fuel level sensor, corroded electrical connections, or a damaged wiring harness.
3. How can I diagnose the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- Diagnosis typically involves inspecting the fuel sender circuit for shorts to ground, testing the fuel level sensor, checking for corrosion in electrical connections, and inspecting the wiring harness.
4. Can I still drive my vehicle with the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- It is not recommended to drive the vehicle with this code present, as inaccurate fuel gauge readings can lead to running out of fuel unexpectedly.
5. How can I repair the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- Repair may involve repairing the short to ground in the fuel sender circuit, replacing the faulty fuel level sensor, cleaning or replacing corroded electrical connections, or repairing the damaged wiring harness.
6. Is it safe to reset the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground) without fixing the underlying issue?
- Resetting the code without addressing the root cause may temporarily clear the warning light, but the issue will likely reappear, leading to continued fuel gauge inaccuracies.
7. Can a DIY enthusiast fix the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground)?
- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this code by following a repair manual or consulting with a professional for guidance.
8. How much does it typically cost to repair the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground) at a mechanic?
- Repair costs can vary depending on the exact cause of the issue, but it may range from $100 to $300 or more, including parts and labor.
9. Are there any preventive measures to avoid encountering the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground) in the future?
- Regularly inspecting and maintaining the fuel sender circuit, keeping electrical connections clean and free of corrosion, and addressing any wiring issues promptly can help prevent this code from recurring.
10. Will fixing the OBDII code B1204 Mercury (Fuel Sender Circuit Short To Ground) improve my vehicle's fuel efficiency?
- While fixing this code will ensure accurate fuel gauge readings, it may not directly impact the vehicle's fuel efficiency.
Discuss the causes and fixes for B1204 Mercury OBDII Code
Code B1204 Mercury comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
