AutoCodes – Generic – P316B

P316B Code - Secondary Fuel System Requests 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 Secondary Fuel System. 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: P316B indicates Secondary Fuel System Requests Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Secondary Fuel System.
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 1,016

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
Add Comment

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

Code P316B 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 Secondary Fuel System Requests Signal Message Counter Incorrect.

OBDII Code P316B - Secondary Fuel System Requests Signal Message Counter Incorrect - AutoCodes.com — P316B Code - Secondary Fuel System Requests Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P316B?

Faulty Secondary Fuel System

How to Fix the DTC P316B?

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 P316B 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 P316B code?

Need more information on how to fix the P316B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P316B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P316B Buick — Secondary Fuel System Requests Signal Message Counter Incorrect
P316B Cadillac — Secondary Fuel System Requests Signal Message Counter Incorrect
P316B Chevrolet — Secondary Fuel System Requests Signal Message Counter Incorrect
P316B GMC — Secondary Fuel System Requests Signal Message Counter Incorrect

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 P316B Code

1. What are the common symptoms of OBDII code P316B?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potential stalling.

2. What can cause the OBDII code P316B to trigger?

- The code is typically triggered by issues such as a faulty fuel pump, clogged fuel filter, vacuum leak, or problems with the fuel pressure sensor.

3. How can I diagnose the OBDII code P316B?

- Diagnosis involves using an OBDII scanner to retrieve the code, checking for related symptoms, inspecting the fuel system components, and testing the fuel pressure.

4. What are some repair tips for fixing OBDII code P316B?

- Repair tips may include replacing the fuel pump, cleaning or replacing the fuel filter, fixing any vacuum leaks, or recalibrating the fuel pressure sensor.

5. Can driving with OBDII code P316B lead to further damage?

- Continuing to drive with this code may cause damage to the engine or fuel system components, so it is advisable to address the issue promptly.

6. How can I prevent OBDII code P316B from reoccurring?

- Regular maintenance of the fuel system, using high-quality fuel, and addressing any related issues promptly can help prevent the code from reoccurring.

7. Is it safe to drive my vehicle with the OBDII code P316B illuminated?

- It is not recommended to drive the vehicle with this code illuminated, as it can lead to poor engine performance and potential safety hazards.

8. Can a DIY enthusiast fix OBDII code P316B at home?

- Depending on the underlying cause, DIY enthusiasts with the necessary skills and tools may be able to fix the issue at home, but professional help may be needed for complex repairs.

9. Will resetting the OBDII code P316B turn off the check engine light?

- Resetting the code may turn off the check engine light temporarily, but if the underlying issue is not addressed, the light is likely to come back on.

10. How long does it usually take to repair OBDII code P316B?

- The time required for repairs can vary depending on the specific cause and the extent of the issue, but it is usually recommended to address the problem as soon as possible.