P0091 2017 Chevrolet Silverado Code - Fuel Pressure Regulator Control Circuit Low Voltage
Quick Answer
High-pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the high-pressure fuel pump. Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor 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
- P0091 2017 Chevrolet Silverado indicates Fuel Pressure Regulator Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor 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 P0091 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0091 2017 Chevrolet Silverado?
- Faulty High-Pressure Fuel Pump
- High-Pressure Fuel Pump harness is open or shorted
- High-Pressure Fuel Pump electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0091 2017 Chevrolet Silverado?
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 P0091 2017 Chevrolet Silverado 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 P0091 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P0091 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P0091 on a 2017 Chevrolet Silverado?
Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and in some cases, the Check Engine Light may illuminate.
2. What does the OBDII code P0091 "Fuel Pressure Regulator Control Circuit Low Voltage" on a 2017 Chevrolet Silverado indicate?
This code indicates that the fuel pressure regulator control circuit is detecting a lower than expected voltage, which can impact fuel delivery and engine performance.
3. What are the potential causes of OBDII code P0091 on a 2017 Chevrolet Silverado?
Possible causes include a faulty fuel pressure regulator, wiring issues in the fuel pressure regulator control circuit, a malfunctioning fuel pump, or a problem with the engine control module.
4. How can I diagnose the cause of OBDII code P0091 on my 2017 Chevrolet Silverado?
Diagnosis typically involves inspecting the fuel pressure regulator, checking the wiring and connectors in the control circuit, testing the fuel pump, and using a scan tool to monitor fuel pressure readings.
5. What are some repair tips for fixing OBDII code P0091 on a 2017 Chevrolet Silverado?
Repair tips include checking and replacing the fuel pressure regulator if necessary, repairing any damaged wiring or connectors, ensuring the fuel pump is functioning correctly, and resetting the trouble code after repairs are made.
6. Can driving with OBDII code P0091 on a 2017 Chevrolet Silverado cause further damage?
Continued driving with this code may lead to poor engine performance, reduced fuel efficiency, and potential damage to engine components due to improper fuel delivery.
7. How urgent is it to address OBDII code P0091 on a 2017 Chevrolet Silverado?
While the vehicle may still be driveable with this code, it is recommended to address it promptly to prevent further issues and ensure optimal engine performance and fuel efficiency.
8. Will resetting the Check Engine Light resolve OBDII code P0091 on a 2017 Chevrolet Silverado?
Simply resetting the Check Engine Light may temporarily clear the code, but it will likely reappear if the underlying issue causing the low voltage in the fuel pressure regulator control circuit is not addressed.
9. Is it possible to fix OBDII code P0091 on a 2017 Chevrolet Silverado without professional help?
Depending on your level of automotive expertise, you may be able to diagnose and repair the issue yourself by following repair guides and using appropriate tools. However, complex issues may require professional assistance.
10. How much can I expect to pay to repair OBDII code P0091 on a 2017 Chevrolet Silverado?
The cost of repairs can vary based on the specific cause of the code and whether you choose to fix the issue yourself or seek help from a professional mechanic. Costs may include parts and labor expenses.
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