AutoCodes – GMC – P30DE 2017 GMC Sierra

P30DE 2017 GMC Sierra Code - Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Fuel Rail Pressure Sensor 2, Fuel Rail Pressure Sensor 2 harness is open or shorted, Fuel Rail Pressure Sensor 2 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: P30DE 2017 GMC Sierra indicates Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Fuel Rail Pressure Sensor 2, Fuel Rail Pressure Sensor 2 harness is open or shorted, Fuel Rail Pressure Sensor 2 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 179

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 Sep 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P30DE 2017 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Fuel Rail Pressure Sensor 2 Signal Message Counter is Incorrect.

OBDII Code P30DE 2017 GMC Sierra - Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect - AutoCodes.com — P30DE 2017 GMC Sierra Code - Fuel Rail Pressure Sensor 2 Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P30DE 2017 GMC Sierra?

Faulty Fuel Rail Pressure Sensor 2
Fuel Rail Pressure Sensor 2 harness is open or shorted
Fuel Rail Pressure Sensor 2 circuit poor electrical connection

How to Fix the DTC P30DE 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P30DE 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 P30DE 2017 GMC Sierra code?

Need more information on how to fix the P30DE 2017 GMC Sierra code? Get Access to Factory Service Manuals

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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 P30DE 2017 GMC Sierra Code

1. What does the OBDII code P30DE mean on a 2017 GMC Sierra?

P30DE indicates an issue with the Fuel Rail Pressure Sensor 2, specifically that its signal message counter is incorrect or not functioning as expected.

2. What are the symptoms of the P30DE code in a 2017 GMC Sierra?

Symptoms may include a check engine light, reduced engine performance, poor fuel economy, rough idling, or difficulty starting the engine.

3. What causes the P30DE code to appear?

Common causes include a faulty fuel rail pressure sensor, wiring or connector issues, a malfunctioning ECM (Engine Control Module), or software-related problems.

4. Can I drive my 2017 GMC Sierra with the P30DE code?

Driving with this code is not recommended, as it may lead to poor engine performance and potential damage to the fuel delivery system if left unresolved.

5. How do I diagnose the P30DE code on my GMC Sierra?

Diagnosis typically involves using an advanced OBDII scanner to monitor the fuel rail pressure sensor data, inspecting wiring and connectors, and checking for ECM updates or faults.

6. What repairs can fix the P30DE code?

Repairs may include replacing the faulty fuel rail pressure sensor, repairing or replacing damaged wiring, cleaning connectors, or reprogramming the ECM if necessary.

7. How much does it cost to fix the P30DE code on a GMC Sierra?

The cost can vary, but replacing a fuel rail pressure sensor typically ranges from $150 to $350, including parts and labor. Additional repairs may increase the total cost.

8. Can a faulty fuel pump cause the P30DE code?

A failing fuel pump is unlikely to directly cause the P30DE code, but it can lead to related issues affecting fuel pressure and performance.

9. Is a software update required to fix the P30DE code?

In some cases, a software update for the ECM may be needed if the issue is related to outdated programming or calibration errors.

10. How can I prevent the P30DE code from recurring?

Regular maintenance of the fuel system, prompt repair of wiring or sensor issues, and ensuring ECM updates are applied can help prevent this code from recurring.