P120F Code - Fuel Pressure Regulator Excessive Pressure Variation
Quick Answer
The Powertrain Control Module (PCM) monitors the Fuel Pressure Sensor Circuit 'A'. Common causes include Faulty Fuel Pressure Sensor Circuit 'A', Fuel Pressure Sensor Circuit 'A' harness is open or shorted, Fuel Pressure Sensor Circuit 'A' 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
- P120F indicates Fuel Pressure Regulator Excessive Pressure Variation.
- Common causes
- Common causes include Faulty Fuel Pressure Sensor Circuit 'A', Fuel Pressure Sensor Circuit 'A' harness is open or shorted, Fuel Pressure Sensor Circuit 'A' 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 P120F Description
What are the Possible Causes of the DTC P120F?
- Faulty Fuel Pressure Sensor Circuit 'A'
- Fuel Pressure Sensor Circuit 'A' harness is open or shorted
- Fuel Pressure Sensor Circuit 'A' circuit poor electrical connection
How to Fix the DTC P120F?
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 P120F 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 P120F code?
Need more information on how to fix the P120F code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P120F code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P120F Ford — Fuel Pressure Regulator Excessive Pressure Variation
Frequently Asked Questions about P120F Code
1. What are the common symptoms of OBDII code P120F (Fuel Pressure Regulator Excessive Pressure Variation)?
- Common symptoms include rough idle, engine misfires, loss of power, and potentially a check engine light.
2. What are the possible causes of OBDII code P120F?
- The code P120F can be triggered by issues such as a faulty fuel pressure regulator, fuel pump problems, clogged fuel filter, or fuel system leaks.
3. How can I diagnose the cause of OBDII code P120F?
- Diagnosis typically involves checking fuel pressure using a gauge, inspecting the fuel pressure regulator, examining the fuel pump, and looking for any fuel leaks in the system.
4. Can a clogged fuel filter cause OBDII code P120F?
- Yes, a clogged fuel filter can cause insufficient fuel flow and lead to pressure variations triggering the P120F code.
5. What are the repair options for OBDII code P120F?
- Repair options may include replacing the fuel pressure regulator, fixing fuel pump issues, replacing the fuel filter, or repairing any fuel system leaks.
6. Is it safe to continue driving with OBDII code P120F present?
- It is not recommended to continue driving with the P120F code as it can lead to engine performance issues and potential damage if left unresolved.
7. Can OBDII code P120F be triggered by a loose gas cap?
- No, the P120F code is related to fuel pressure regulator issues and is not typically caused by a loose gas cap.
8. How much does it cost to repair OBDII code P120F?
- The cost of repair for OBDII code P120F can vary depending on the specific cause, but it may range from $100 to $500 or more, including parts and labor.
9. Can resetting the OBDII system clear the P120F code?
- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing the code is not addressed.
10. Is it necessary to visit a mechanic for OBDII code P120F diagnosis and repair?
- While DIY diagnosis is possible, it is recommended to consult a qualified mechanic for proper diagnosis and repair of OBDII code P120F to ensure the issue is correctly identified and fixed.
Discuss the causes and fixes for P120F OBDII Code
Code P120F 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.
