AutoCodes – GMC – P018D 2015 GMC Sierra

P018D 2015 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 2015 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 208

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
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P018D 2015 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 2015 GMC Sierra - Fuel Pressure Sensor 'B' Circuit High - AutoCodes.com — P018D 2015 GMC Sierra Code - Fuel Pressure Sensor 'B' Circuit High

What does this mean?

What are the Possible Causes of the DTC P018D 2015 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 2015 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 2015 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 2015 GMC Sierra code?

Need more information on how to fix the P018D 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P018D 2015 GMC Sierra 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 P018D 2015 GMC Sierra Code

1. What does the OBDII code P018D mean on a 2015 GMC Sierra?

P018D indicates a high voltage issue in the Fuel Pressure Sensor 'B' circuit, which monitors fuel pressure in the fuel system.

2. What are the common symptoms of a P018D code?

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

3. What causes the P018D code to appear?

The code can be caused by a faulty fuel pressure sensor, damaged wiring or connectors in the sensor circuit, a short to power, or an issue with the Engine Control Module (ECM).

4. Can a P018D code cause drivability issues?

Yes, a P018D code can cause issues such as engine hesitation, stalling, or erratic fuel delivery, which can impact drivability.

5. How do you diagnose a P018D code on a 2015 GMC Sierra?

Diagnosis involves checking the fuel pressure sensor, inspecting the wiring and connectors for damage, testing the voltage at the sensor, and using a scan tool to monitor sensor readings.

6. Can I drive my 2015 GMC Sierra with a P018D code?

Driving with this code is not recommended, as it can lead to poor performance, reduced fuel efficiency, and potential long-term damage to the fuel system.

7. How do you fix the P018D code?

Repairs may involve replacing the fuel pressure sensor, repairing or replacing damaged wiring or connectors, or reprogramming/updating the ECM if necessary.

8. How much does it cost to fix a P018D code on a GMC Sierra?

The repair cost can vary, but replacing the fuel pressure sensor typically costs between $100 and $300, depending on parts and labor rates.

9. Can a dirty fuel filter cause a P018D code?

While a dirty fuel filter is unlikely to directly trigger this code, it can cause fuel pressure issues that may indirectly affect the sensor's performance.

10. Is a P018D code common on the 2015 GMC Sierra?

It's not a very common code, but it can occur due to wear and tear on the fuel pressure sensor or wiring over time.