AutoCodes – Generic – P1309

P1309 Code - Misfire Detection Monitor Not enabled

Quick Answer

Misfire Monitor Disabled When the misfire monitor is disabled, usually due to the input signal generated by the camshaft position (CMP) sensor, by sensing the passage of teeth from the CMP wheel. Common causes include Faulty Camshaft Position Sensor, Synchronize Assembly not properly installed, Verify the cam sensor is synchronized. 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
P1309 indicates Misfire Detection Monitor Not enabled.
Common causes
Common causes include Faulty Camshaft Position Sensor, Synchronize Assembly not properly installed, Verify the cam sensor is synchronized.
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 28,639
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 13, 2019
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Code P1309 Description

Misfire Monitor Disabled When the misfire monitor is disabled, usually due to the input signal generated by the camshaft position (CMP) sensor, by sensing the passage of teeth from the CMP wheel.
OBDII Code P1309 - Misfire Detection Monitor Not enabled - AutoCodes.com
P1309 Code - Misfire Detection Monitor Not enabled

What are the Possible Causes of the DTC P1309?

  • Faulty Camshaft Position Sensor
  • Synchronize Assembly not properly installed.
  • Verify the cam sensor is synchronized
  • Faulty Powertrain Control Module (PCM)
  • Verify input sensor parameters are correct

How to Fix the DTC P1309?

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 P1309 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 P1309 code?

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Need Help with the Code?

Get the P1309 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 P1309 Code

1. What are the common symptoms of OBDII code P1309 (Misfire Detection Monitor Not enabled)?

- Common symptoms include rough idling, engine misfires, loss of power, and an illuminated Check Engine Light.

2. What can cause the OBDII code P1309 to trigger?

- The code P1309 is typically triggered when the Misfire Detection Monitor is not enabled in the vehicle's onboard computer system.

3. How can I diagnose the OBDII code P1309?

- Diagnosis usually involves using a diagnostic scanner to read the code from the vehicle's computer and checking for related issues with the misfire detection system.

4. Can driving with the OBDII code P1309 cause further damage to the vehicle?

- Driving with this code may lead to poor engine performance, decreased fuel efficiency, and potential damage to the catalytic converter over time.

5. What are some possible repair tips for fixing the OBDII code P1309?

- Repairs may involve enabling the Misfire Detection Monitor, checking and repairing any damaged wiring or connections, or replacing faulty components in the misfire detection system.

6. Is it safe to continue driving with the OBDII code P1309 unresolved?

- It is not recommended to drive with this code unresolved as it can lead to further engine issues and potentially cause more significant damage to the vehicle.

7. How much does it typically cost to repair the OBDII code P1309?

- Repair costs can vary depending on the underlying cause of the code, but it is advisable to consult with a professional mechanic for an accurate estimate.

8. Can I reset the OBDII code P1309 on my own?

- While you can clear the code using a diagnostic scanner, it is important to address the root cause of the issue to prevent the code from reoccurring.

9. Are there any DIY fixes for the OBDII code P1309?

- DIY fixes may include checking and securing connections, inspecting wiring for damage, and ensuring the Misfire Detection Monitor is properly enabled.

10. How do I prevent the OBDII code P1309 from coming back?

- Regular maintenance, timely repairs of any related issues, and addressing engine misfires promptly can help prevent the code from recurring.

Discuss the causes and fixes for P1309 OBDII Code

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