P140F 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P140F 2017 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 2017 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 2017 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.
Need more information about the P140F 2017 GMC Sierra code?
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Frequently Asked Questions about P140F 2017 GMC Sierra Code
What does the OBDII code P140F mean for a 2017 GMC Sierra?
P140F indicates an issue with the Exhaust Gas Recirculation (EGR) motor performance, specifically related to its current performance, which can lead to increased emissions and engine inefficiency.
What symptoms might I notice if my GMC Sierra has a P140F code?
Common symptoms include a check engine light, rough idle, reduced engine performance, increased fuel consumption, and possible stalling.
What are the primary causes of the P140F code?
The P140F code can be caused by a faulty EGR motor, wiring issues, a clogged EGR passage, or a malfunctioning EGR control valve.
How can I diagnose the P140F code effectively?
Start by using an OBDII scanner to confirm the code, then visually inspect the EGR system for any obvious damage or blockages, and test the EGR motor and related electrical components.
What repairs might be needed to fix the P140F code?
Repairs may involve cleaning or replacing the EGR valve, fixing wiring issues, or replacing the EGR control motor if it is found to be defective.
Can I drive my GMC Sierra with a P140F code?
While it may be drivable, it's not recommended as it can lead to poor engine performance and increased emissions. It’s best to address the issue as soon as possible.
How can I prevent the P140F code from recurring?
Regular maintenance of the EGR system, including cleaning and inspections, can help prevent the recurrence of the P140F code. Keeping the intake system clean and using high-quality fuel can also be beneficial.
Is the P140F code related to other engine codes?
Yes, the P140F code can be associated with other EGR-related codes or codes indicating performance issues, so it's important to check for additional codes for a comprehensive diagnosis.
What should I do if the check engine light comes back on after repairing the P140F code?
If the check engine light reappears, it’s advisable to re-scan for codes, inspect the EGR system again, and ensure that all repairs were done correctly. If needed, consult with a professional mechanic for further diagnosis.
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