P143E 2018 GMC Sierra Code - Fuel Level Sensor 2 Reference Feedback Performance
Quick Answer
The signal circuit is connected to the Fuel Pump Driver Control Module, the control module communicates with the Engine Control Module (ECM) via serial data. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module 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
- P143E 2018 GMC Sierra indicates Fuel Level Sensor 2 Reference Feedback Performance.
- Common causes
- Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module 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 P143E 2018 GMC Sierra Description
What are the Possible Causes of the DTC P143E 2018 GMC Sierra?
- Faulty Fuel Pump Driver Control Module
- Fuel Pump Driver Control Module harness is open or shorted
- Fuel Pump Driver Control Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P143E 2018 GMC Sierra?
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 P143E 2018 GMC Sierra 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 P143E 2018 GMC Sierra Code
1. What does the OBDII code P143E mean on a 2018 GMC Sierra?
The P143E code indicates an issue with the Fuel Level Sensor 2 Reference Feedback Performance, meaning the signal from the secondary fuel level sensor is out of the expected range.
2. What are the common symptoms of code P143E in a GMC Sierra?
Symptoms may include an inaccurate or fluctuating fuel gauge, a check engine light, or erratic fuel level readings.
3. What causes the P143E code to appear?
Common causes include a faulty secondary fuel level sensor, damaged wiring or connectors, a malfunctioning fuel pump module, or a software issue in the ECM.
4. Can I drive my GMC Sierra with the P143E code active?
While the truck may still be drivable, you risk running out of fuel due to inaccurate readings. It’s best to address the issue promptly.
5. How do you diagnose the P143E code?
Diagnosis involves scanning for additional codes, inspecting the fuel level sensor wiring, checking sensor signals with a multimeter, and verifying the ECM’s software is up to date.
6. How can the P143E code be fixed?
Repairs may include replacing the faulty fuel level sensor, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
7. How much does it cost to fix the P143E code?
Repair costs can vary, but replacing a fuel level sensor typically ranges from $200 to $500, including parts and labor.
8. Can a software update fix the P143E code?
In some cases, a software update for the ECM might resolve the issue if the problem is related to incorrect sensor calibration.
9. Does the P143E code affect fuel efficiency?
The code itself doesn’t directly impact fuel efficiency, but inaccurate fuel level readings can lead to running out of fuel unexpectedly.
10. What tools are needed to troubleshoot the P143E code?
Tools include an OBDII scanner, a multimeter for electrical testing, and possibly specialized fuel system diagnostic equipment.
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