AutoCodes – GMC – P018E GMC

P018E GMC Code - Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic

Quick Answer

The Powertrain Control Module (PCM) provides a 5-Volt supply to the Fuel Rail Pressure Sensor (FRPS). Common causes include Faulty Fuel Pressure Sensor 'B', Fuel Pressure Sensor 'B' harness is open or shorted, Fuel Pressure Sensor 'B' 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: P018E GMC indicates Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic.
Common causes: Common causes include Faulty Fuel Pressure Sensor 'B', Fuel Pressure Sensor 'B' harness is open or shorted, Fuel Pressure Sensor 'B' 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.

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Code Popularity 1,166

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 May 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P018E GMC Description

The Powertrain Control Module (PCM) provides a 5-Volt supply to the Fuel Rail Pressure Sensor (FRPS). The PCM also provides a ground on the sensor return circuit. The Fuel Rail Pressure Sensor provides a signal to the PCM on the Fuel Rail Pressure Sensor Signal circuit. This sensor signal voltage changes based on the pressure in the fuel rail. The PCM will detect a low signal voltage at low rail pressures. The PCM will detect a high signal voltage during high rail pressure conditions. The PCM will light the MIL lamp immediately after the diagnostic runs and fails. During this time the customer may experience a power and or speed derate. The PCM will turn off the MIL light after the diagnostic runs and passes in four consecutive drive cycles.

OBDII Code P018E GMC - Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic - AutoCodes.com — P018E GMC Code - Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic

What does this mean?

What are the Possible Causes of the DTC P018E GMC?

Faulty Fuel Pressure Sensor 'B'
Fuel Pressure Sensor 'B' harness is open or shorted
Fuel Pressure Sensor 'B' circuit poor electrical connection

How to Fix the DTC P018E GMC?

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 P018E GMC 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 P018E GMC code?

Need more information on how to fix the P018E GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P018E GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P018E 2014 GMC Sierra — Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic
P018E 2015 GMC Sierra — Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic
P018E 2016 GMC Sierra — Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic
P018E 2017 GMC Sierra — Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic
P018E 2018 GMC Sierra — Fuel Pressure Sensor 'B' Circuit Intermittent/Erratic

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 P018E GMC Code

1. What are common symptoms of OBDII code P018E GMC?

- Common symptoms include rough idling, poor fuel efficiency, engine stalling, and the illumination of the check engine light.

2. What could cause the OBDII code P018E GMC to trigger?

- The code P018E GMC is typically triggered by a faulty fuel pressure sensor, wiring issues, or a poor connection in the fuel pressure sensor circuit.

3. How can I diagnose the OBDII code P018E GMC?

- To diagnose the code P018E GMC, you can use a diagnostic scanner to read the code and then visually inspect the fuel pressure sensor and its wiring for any signs of damage.

4. Can a dirty fuel filter cause the OBDII code P018E GMC to appear?

- Yes, a dirty fuel filter can cause insufficient fuel pressure readings, which may trigger the code P018E GMC.

5. What should I do if I encounter the OBDII code P018E GMC?

- If you encounter the code P018E GMC, it is recommended to first check the fuel pressure sensor and its wiring for any issues. If necessary, replace the sensor or repair any damaged wiring.

6. Is it safe to continue driving with the OBDII code P018E GMC present?

- It is not recommended to continue driving with the code P018E GMC present, as it can lead to potential engine performance issues and may cause further damage if left unresolved.

7. Can a professional mechanic help fix the OBDII code P018E GMC?

- Yes, a professional mechanic can diagnose and repair the issues causing the code P018E GMC, ensuring proper functionality of the fuel pressure sensor circuit.

8. Are there any DIY repair tips for addressing the OBDII code P018E GMC?

- DIY repair tips for the code P018E GMC include checking the sensor's wiring connections, cleaning any dirt or debris around the sensor, and replacing the sensor if necessary.

9. How important is the fuel pressure sensor in the vehicle's operation?

- The fuel pressure sensor is crucial for monitoring fuel pressure in the fuel system, ensuring proper engine performance, fuel efficiency, and emissions control.

10. Can extreme weather conditions affect the fuel pressure sensor and trigger the OBDII code P018E GMC?

- Yes, extreme weather conditions such as extreme heat or cold can affect the fuel pressure sensor's performance and potentially trigger the code P018E GMC.