P0091 2016 Chevrolet Silverado Code - Fuel Pressure Regulator Control Circuit Low Voltage
Quick Answer
The P0091 code on a 2016 Chevrolet Silverado indicates a problem with the fuel pressure regulator control circuit having low voltage. Common causes include Faulty fuel pressure regulator, Damaged wiring or connectors in the control circuit, Malfunctioning ECM. 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 2016 Chevrolet Silverado indicates Fuel Pressure Regulator Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty fuel pressure regulator, Damaged wiring or connectors in the control circuit, Malfunctioning ECM.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0091 2016 Chevrolet Silverado Description
The P0091 code on a 2016 Chevrolet Silverado indicates a problem with the fuel pressure regulator control circuit having low voltage. The fuel pressure regulator is responsible for maintaining a constant fuel pressure in the fuel system, ensuring proper fuel delivery to the engine. The control circuit monitors and adjusts the fuel pressure regulator's operation based on input from the vehicle's engine control module (ECM). When the voltage in the circuit drops below the specified range, the ECM triggers the P0091 code.
Common Causes of P0091 2016 Chevrolet Silverado
- Faulty fuel pressure regulator
- Damaged wiring or connectors in the control circuit
- Malfunctioning ECM
- Problem with the fuel pump
- Electrical issues such as a blown fuse or relay
Symptoms of P0091 2016 Chevrolet Silverado
- Engine misfires or rough idling
- Reduced fuel efficiency
- Hesitation or lack of power during acceleration
- Check Engine Light illuminated
- Difficulty starting the vehicle
How to Fix P0091 2016 Chevrolet Silverado
- Use a diagnostic scanner to retrieve the trouble code and pinpoint the exact cause of the issue.
- Inspect the wiring and connectors in the fuel pressure regulator control circuit for any damage or corrosion. Repair or replace as needed.
- Test the fuel pressure regulator to determine if it is functioning correctly. Replace if faulty.
- Check the ECM for any faults or malfunctions. Repair or replace if necessary.
- Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0091 2016 Chevrolet Silverado
The cost of repairing a P0091 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. Typically, the cost of parts for this repair could range from $100 to $300, including a new fuel pressure regulator or wiring components. Labor costs at an auto repair shop could add an additional $100 to $300, with total repair costs falling between $200 and $600. However, it's essential to note that labor rates can vary based on location, the expertise of the mechanic, and the specific dealership or independent shop. It's advisable to obtain quotes from multiple sources to get a more accurate estimate of the repair costs.
Need more information about the P0091 2016 Chevrolet Silverado code?
Need more information on how to fix the P0091 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0091 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0091 2016 Chevrolet Silverado Code
1. What does OBDII code P0091 mean on a 2016 Chevrolet Silverado?
P0091 indicates that the fuel pressure regulator control circuit is experiencing low voltage, which can affect fuel pressure regulation.
2. What are the common symptoms of code P0091 in a 2016 Chevrolet Silverado?
Symptoms include engine misfires, poor acceleration, rough idling, difficulty starting, and reduced fuel efficiency.
3. What causes the P0091 code in a 2016 Chevrolet Silverado?
Common causes include a faulty fuel pressure regulator, damaged wiring or connectors, a malfunctioning fuel pump control module, or a failing powertrain control module (PCM).
4. Can a bad fuel pump cause the P0091 code?
Yes, a failing fuel pump or its control module can lead to low voltage in the fuel pressure regulator circuit, triggering the P0091 code.
5. How can I diagnose the P0091 code in my Silverado?
Start by inspecting the wiring and connectors for damage, test the fuel pressure regulator, and check the fuel pump control module for proper operation.
6. Is it safe to drive with the P0091 code active?
Driving with this code can lead to poor engine performance and potential damage to components. It's best to address the issue promptly.
7. How do you fix the P0091 code on a 2016 Chevrolet Silverado?
Repairs may involve replacing the fuel pressure regulator, repairing damaged wiring, or replacing the fuel pump control module if necessary.
8. Can a blown fuse cause the P0091 code?
Yes, a blown fuse in the fuel pump or pressure regulator circuit can disrupt voltage and trigger the P0091 code.
9. Do I need to replace the PCM to fix the P0091 code?
Replacing the PCM is a last resort and only necessary if it is confirmed that the PCM is faulty after other components are ruled out.
10. How much does it cost to fix the P0091 code on a 2016 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $600, depending on whether the issue is with the regulator, wiring, or control module.
Discuss the causes and fixes for P0091 2016 Chevrolet Silverado OBDII Code
Code P0091 2016 Chevrolet Silverado 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.