AutoCodes – Dodge – P0091 Dodge

P0091 Dodge Code - Fuel Quantity Solenoid Short To Ground

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Quantity Solenoid. Common causes include Faulty fuel pressure solenoid, Fuel pressure solenoid harness is open or shorted, Fuel pressure solenoid 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 Dodge indicates Fuel Quantity Solenoid Short To Ground.
Common causes: Common causes include Faulty fuel pressure solenoid, Fuel pressure solenoid harness is open or shorted, Fuel pressure solenoid 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.

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Code Popularity 6,040

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0091 Dodge Description

The Powertrain Control Module (PCM) monitors the Fuel Quantity Solenoid. The PCM sets the OBDII code when the Fuel Quantity Solenoid is not to factory specifications.

OBDII Code P0091 Dodge - Fuel Quantity Solenoid Short To Ground - AutoCodes.com — P0091 Dodge Code - Fuel Quantity Solenoid Short To Ground

What does this mean?

What are the Possible Causes of the DTC P0091 Dodge?

Faulty fuel pressure solenoid
Fuel pressure solenoid harness is open or shorted
Fuel pressure solenoid electrical circuit poor connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0091 Dodge?

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 Dodge 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 Dodge code?

Need more information on how to fix the P0091 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0091 Dodge code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0091 Dodge Code

1. What does the OBDII code P0091 mean on a Dodge vehicle?

P0091 indicates that the Powertrain Control Module (PCM) has detected a short to ground in the Fuel Quantity Solenoid Circuit, which controls fuel delivery to the engine.

2. What are the common symptoms of code P0091 in a Dodge?

Symptoms may include poor engine performance, rough idling, stalling, difficulty starting, reduced fuel efficiency, or the Check Engine Light illuminating.

3. What causes the P0091 code on Dodge vehicles?

Common causes include damaged or shorted wiring in the fuel solenoid circuit, a faulty fuel quantity solenoid, a malfunctioning PCM, or a blown fuse.

4. How do I diagnose a P0091 code on my Dodge?

Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for continuity and shorts in the fuel solenoid circuit. If the wiring is intact, test the solenoid itself for proper operation.

5. Can a faulty fuel quantity solenoid cause a P0091 code?

Yes, a defective fuel quantity solenoid can cause this code if it is unable to operate properly or has an internal short.

6. How do I fix the P0091 code on a Dodge vehicle?

Repairs may include repairing or replacing damaged wiring, replacing a faulty fuel quantity solenoid, or reprogramming/repairing the PCM if necessary.

7. Is it safe to drive with a P0091 code on my Dodge?

Driving with this code is not recommended as it can lead to poor engine performance, stalling, or further damage to the fuel system.

8. How much does it cost to fix a P0091 code on a Dodge?

Repair costs vary depending on the root cause. Wiring repairs may cost $100-$200, while replacing the fuel quantity solenoid can range from $200-$500. PCM repairs or replacements may cost significantly more.

9. Can clearing the P0091 code solve the issue?

Clearing the code may temporarily reset the warning, but if the underlying issue isn't resolved, the code will return.

10. Do I need a professional mechanic to fix the P0091 code?

While basic wiring inspections can be done by DIYers, diagnosing and repairing components like the fuel solenoid or PCM often require specialized tools and expertise, so consulting a professional is recommended.