AutoCodes – Generic – P16F3

P16F3 Code - Control Module Redundant Memory Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module. 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: P16F3 indicates Control Module Redundant Memory Performance.
Common causes: Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module.
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 24,092

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 Mar 29, 2024

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 P16F3 Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). This diagnostic also addresses if the ECM is not programmed. The ECM monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an internal failure or incomplete programming for more than 10 s.

OBDII Code P16F3 - Control Module Redundant Memory Performance - AutoCodes.com — P16F3 Code - Control Module Redundant Memory Performance

What does this mean?

What are the Possible Causes of the DTC P16F3?

Low battery voltage
Reprogram Engine Control Module (ECM)
Faulty Engine Control Module
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P16F3?

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

If no problems are found during the inspection, reprogram the Powertrain Control Module (PCM) with the latest software program.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16F3 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 P16F3 code?

Need more information on how to fix the P16F3 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16F3 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16F3 Acura — Starter Cut Relay 1 Control Circuit Low Voltage
P16F3 Buick — Control Module Redundant Memory Performance
P16F3 Cadillac — Control Module Redundant Memory Performance
P16F3 Chevrolet — Control Module Redundant Memory Performance
P16F3 GMC — Control Module Redundant Memory Performance
P16F3 Honda — Starter Cut Relay 1 Control Circuit Low Voltage

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 P16F3 Code

1. What are the common symptoms of OBDII code P16F3 (Control Module Redundant Memory Performance)?

- Common symptoms include the check engine light illuminating on the dashboard, reduced engine performance, and potential drivability issues.

2. What are the possible causes of OBDII code P16F3?

- The code P16F3 can be triggered by issues such as a faulty control module, wiring issues, software glitches, or a weak battery causing voltage fluctuations.

3. How can I diagnose OBDII code P16F3?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the control module's connections, inspecting wiring for damage, and testing the battery's voltage.

4. Can OBDII code P16F3 be cleared/reset?

- Yes, the code can be cleared using an OBDII scanner after addressing the underlying issue that triggered it. However, if the root cause is not fixed, the code is likely to return.

5. Is it safe to continue driving with OBDII code P16F3 present?

- It is generally not recommended to drive with the code active, as it can lead to potential engine performance issues and may cause further damage if left unresolved.

6. How much does it typically cost to repair OBDII code P16F3?

- The cost of repair can vary depending on the exact cause of the code and the labor rates of the repair shop. Costs may range from a simple wiring repair to replacement of the control module.

7. Are there any DIY tips for addressing OBDII code P16F3?

- DIY tips may include checking and tightening control module connections, inspecting wiring for damage, and ensuring the battery is in good condition to prevent voltage fluctuations.

8. Can a weak battery cause OBDII code P16F3 to appear?

- Yes, a weak or failing battery can cause voltage fluctuations that may trigger the P16F3 code by affecting the performance of the control module's redundant memory.

9. Is it necessary to visit a mechanic for OBDII code P16F3, or can I fix it myself?

- While some DIY troubleshooting may be possible, accurately diagnosing and repairing the underlying cause of the P16F3 code often requires the expertise of a qualified mechanic.

10. How long can I safely wait before addressing OBDII code P16F3?

- It is advisable to address the P16F3 code as soon as possible to prevent potential engine performance issues and further damage. Delaying repairs could lead to more costly fixes down the line.