AutoCodes – GMC – P018D 2017 GMC Sierra

P018D 2017 GMC Sierra Code - Fuel Pressure Sensor 'B' Circuit High

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: P018D 2017 GMC Sierra indicates Fuel Pressure Sensor 'B' Circuit High.
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 188

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 29, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P018D 2017 GMC Sierra 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 P018D 2017 GMC Sierra - Fuel Pressure Sensor 'B' Circuit High - AutoCodes.com — P018D 2017 GMC Sierra Code - Fuel Pressure Sensor 'B' Circuit High

What does this mean?

What are the Possible Causes of the DTC P018D 2017 GMC Sierra?

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 P018D 2017 GMC Sierra?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P018D 2017 GMC Sierra 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 P018D 2017 GMC Sierra code?

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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 P018D 2017 GMC Sierra Code

1. What does the OBDII code P018D mean on a 2017 GMC Sierra?

P018D indicates a "Fuel Pressure Sensor 'B' Circuit High," meaning the Powertrain Control Module (PCM) has detected a high voltage signal from the fuel pressure sensor on the low-pressure fuel system.

2. What are the common symptoms of code P018D in a 2017 GMC Sierra?

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

3. What causes the P018D code to appear on a 2017 GMC Sierra?

Common causes include a faulty fuel pressure sensor, damaged or corroded wiring, a loose electrical connection, or issues with the PCM.

4. Can I continue driving my 2017 GMC Sierra with a P018D code?

While it may be possible to drive with this code, it is not advisable as it can lead to further engine performance issues or damage to the fuel system.

5. How do I diagnose the P018D code on my 2017 GMC Sierra?

Diagnosis typically involves using a scan tool to monitor fuel pressure readings, inspecting the fuel pressure sensor and its wiring, and testing for proper voltage and ground connections.

6. How do I fix the P018D code on a 2017 GMC Sierra?

Repairs may include replacing the faulty fuel pressure sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/updating the PCM if necessary.

7. How much does it cost to fix the P018D code on a 2017 GMC Sierra?

The repair cost can vary, but replacing the fuel pressure sensor typically ranges from $150 to $300, depending on labor rates and parts pricing.

8. Is a faulty fuel pressure sensor the only reason for the P018D code?

No, other potential causes include wiring issues, connector problems, or a malfunctioning PCM.

9. Can a dirty fuel filter cause the P018D code on a 2017 GMC Sierra?

While a dirty fuel filter can affect fuel pressure, it is not a direct cause of the P018D code, which relates specifically to electrical issues in the sensor circuit.

10. Do I need special tools to fix the P018D code on my 2017 GMC Sierra?

Yes, you may need a diagnostic scan tool, a multimeter to test electrical connections, and possibly basic hand tools to replace the sensor.