P140F 2015 GMC Sierra Code - Exhaust Gas Recirculation Motor Current Performance
Quick Answer
The Engine Control Module (ECM) supplies the Exhaust Gas Recirculation (EGR) valve with a 5 V reference circuit, a low reference circuit, an H-bridge motor directional control circuit, and a signal circuit. Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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
- P140F 2015 GMC Sierra indicates Exhaust Gas Recirculation Motor Current Performance.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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 P140F 2015 GMC Sierra Description
What are the Possible Causes of the DTC P140F 2015 GMC Sierra?
- Faulty Exhaust Gas Recirculation (EGR) Valve
- Exhaust Gas Recirculation Valve harness is open or shorted
- Exhaust Gas Recirculation Valve circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P140F 2015 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 P140F 2015 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 P140F 2015 GMC Sierra Code
1. What does OBDII code P140F mean on a 2015 GMC Sierra?
P140F indicates an issue with the Exhaust Gas Recirculation (EGR) motor's current performance, meaning the motor isn't operating within the expected current parameters.
2. What are common symptoms of code P140F on a 2015 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced engine performance, rough idling, poor fuel economy, or hesitation during acceleration.
3. What causes code P140F on a 2015 GMC Sierra?
Common causes include a faulty EGR motor, clogged EGR passages, wiring or connector issues, or a malfunctioning EGR valve position sensor.
4. Can I drive my 2015 GMC Sierra with code P140F?
While the vehicle may still be drivable, ignoring this issue can lead to reduced engine performance, increased emissions, and potential long-term damage to the EGR system.
5. How do I diagnose code P140F on my 2015 GMC Sierra?
Start by inspecting the EGR motor, wiring, and connectors for damage or corrosion. Use a scan tool to check EGR motor performance and look for additional trouble codes.
6. How can I fix code P140F on a 2015 GMC Sierra?
Possible fixes include cleaning the EGR valve and passages, replacing the EGR motor, repairing damaged wiring, or replacing the EGR position sensor if faulty.
7. How much does it cost to fix code P140F on a 2015 GMC Sierra?
Repair costs vary but typically range from $150 to $500, depending on whether the EGR motor or other components need replacement.
8. Can a clogged EGR valve cause code P140F on a 2015 GMC Sierra?
Yes, a clogged EGR valve can restrict airflow, causing the EGR motor to draw abnormal current and trigger the P140F code.
9. Will clearing the P140F code resolve the issue on my 2015 GMC Sierra?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.
10. Can a failing battery or alternator cause code P140F on a 2015 GMC Sierra?
While uncommon, low voltage from a failing battery or alternator can affect the EGR motor's performance and potentially trigger the code.
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