P120E Code - Fuel Pressure Sensor Circuit 'A' Excessive 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
- P120E indicates Fuel Pressure Sensor Circuit 'A' Excessive 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 P120E Description
What are the Possible Causes of the DTC P120E?
- 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 P120E?
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 P120E 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 P120E code?
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Information for Specific Makes
- P120E Ford — Fuel Pressure Sensor Circuit 'A' Excessive Variation
Frequently Asked Questions about P120E Code
1. What does the OBDII code P120E mean?
P120E indicates that the fuel pressure sensor circuit 'A' is detecting excessive variation in fuel pressure, which is outside the acceptable range set by the manufacturer.
2. What are the common symptoms of a P120E code?
Symptoms may include poor engine performance, difficulty starting, rough idling, reduced fuel efficiency, or an illuminated Check Engine Light.
3. What causes the P120E code to appear?
Common causes include a faulty fuel pressure sensor, wiring issues in the sensor circuit, a failing fuel pump, clogged fuel lines, or a malfunctioning fuel pressure regulator.
4. Can I drive with a P120E code?
Driving with this code is not recommended, as it can lead to engine performance issues or even damage due to improper fuel pressure regulation.
5. How do I diagnose a P120E code?
Diagnosis typically involves checking the fuel pressure sensor, inspecting wiring and connectors for damage, testing fuel pressure with a gauge, and using a scan tool to monitor live data.
6. How can a P120E code be fixed?
Repairs may involve replacing the fuel pressure sensor, repairing damaged wiring, cleaning or replacing clogged fuel lines, or installing a new fuel pump or pressure regulator.
7. How much does it cost to fix a P120E code?
The cost varies depending on the root cause but generally ranges from $100 to $500, including parts and labor, with sensor replacement being on the lower end of the spectrum.
8. Can a dirty fuel filter cause a P120E code?
Yes, a dirty or clogged fuel filter can restrict fuel flow, leading to pressure variations that trigger the P120E code.
9. Will resetting the Check Engine Light clear a P120E code?
Resetting the light may temporarily clear the code, but the underlying issue will cause it to return unless properly repaired.
10. What tools are needed to troubleshoot a P120E code?
You’ll need a diagnostic scan tool, a multimeter for electrical testing, and a fuel pressure gauge to measure the actual fuel pressure in the system.
Discuss the causes and fixes for P120E OBDII Code
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