AutoCodes – Chevrolet – P30B5 2017 Chevrolet Silverado

P30B5 2017 Chevrolet Silverado Code - NOx 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 NOx Sensor 2, NOx Sensor 2 harness is open or shorted, NOx 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: P30B5 2017 Chevrolet Silverado indicates NOx Sensor 2 Signal Message Counter Incorrect.
Common causes: Common causes include Faulty NOx Sensor 2, NOx Sensor 2 harness is open or shorted, NOx 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 290

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 P30B5 2017 Chevrolet Silverado 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 NOx Sensor 2 Signal Message Counter is Incorrect.

OBDII Code P30B5 2017 Chevrolet Silverado - NOx Sensor 2 Signal Message Counter Incorrect - AutoCodes.com — P30B5 2017 Chevrolet Silverado Code - NOx Sensor 2 Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P30B5 2017 Chevrolet Silverado?

Faulty NOx Sensor 2
NOx Sensor 2 harness is open or shorted
NOx Sensor 2 circuit poor electrical connection

How to Fix the DTC P30B5 2017 Chevrolet Silverado?

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 P30B5 2017 Chevrolet Silverado 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 P30B5 2017 Chevrolet Silverado code?

Need more information on how to fix the P30B5 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P30B5 2017 Chevrolet Silverado 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 P30B5 2017 Chevrolet Silverado Code

1. What are the common symptoms associated with OBDII code P30B5 in a 2017 Chevrolet Silverado?

The common symptoms of code P30B5 include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P30B5 in a 2017 Chevrolet Silverado indicate?

Code P30B5 indicates that the NOx Sensor 2 Signal Message Counter is registering an incorrect value, suggesting an issue with the NOx sensor or its related components.

3. What are the possible causes of OBDII code P30B5 in a 2017 Chevrolet Silverado?

Possible causes of code P30B5 include a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, software issues, or a problem with the engine control module.

4. How can I diagnose the OBDII code P30B5 in my 2017 Chevrolet Silverado?

Diagnosing code P30B5 involves using an OBDII scanner to retrieve the code, inspecting the NOx sensor and its connections for any visible damage, and performing electrical tests to pinpoint the issue.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P30B5?

It is not recommended to drive the vehicle with code P30B5 present, as it can lead to further damage to the emission control system and affect the overall performance of the vehicle.

6. How can I repair OBDII code P30B5 in my 2017 Chevrolet Silverado?

Repairing code P30B5 may involve replacing the NOx sensor, repairing damaged wiring or connectors, updating the engine control module software, or resetting the code after addressing any underlying issues.

7. Will resetting the OBDII code P30B5 in my 2017 Chevrolet Silverado solve the problem?

Resetting the code without addressing the root cause will only temporarily turn off the check engine light. It is important to diagnose and repair the issue causing code P30B5 for a permanent solution.

8. Is OBDII code P30B5 a common issue in 2017 Chevrolet Silverado vehicles?

While not as common as some other OBDII codes, P30B5 can still occur in 2017 Chevrolet Silverado models due to sensor malfunctions, wiring issues, or software glitches.

9. Can a DIY enthusiast fix OBDII code P30B5 in a 2017 Chevrolet Silverado?

Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and address simpler causes of code P30B5, but more complex issues may require professional assistance.

10. How much does it cost to repair OBDII code P30B5 in a 2017 Chevrolet Silverado?

The cost of repairing code P30B5 can vary depending on the root cause of the issue, the need for replacement parts, and labor costs. It is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.