AutoCodes – Generic – P1350

P1350 Code - Ignition Control System

Quick Answer

The Ignition Control Module (ICM) has independent power and ground circuits. Common causes include Faulty Ignition Control Module, Ignition Control Module harness is open or shorted, Ignition Control Module 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
P1350 indicates Ignition Control System.
Common causes
Common causes include Faulty Ignition Control Module, Ignition Control Module harness is open or shorted, Ignition Control Module 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 33,725
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 17, 2019
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Code P1350 Description

The Ignition Control Module (ICM) has independent power and ground circuits. The circuits between the ICM and the Powertrain Control Module (PCM) consists of the following circuits:
-The ignition control (IC) timing signal
-The IC timing control
-The low resolution engine speed signal
-The medium resolution engine signal
-The camshaft position signal
-The low reference
The ICM sends 3X signals to the PCM, and controls the timing advance during engine cranking. The timing advance changes to PCM control after the following actions occur:
The PCM receives the second 3X signal
The PCM applies 5 volts to the ignition control (IC) timing signal circuit.
The ICM monitors the CKP sync signal when the engine is cranking. The CKP sync signal is passed from the CKP sensor to the ICM on the CKP sensor 2 signal circuit. The CKP sync signal is used to determine the correct cylinder pair and initiate the ignition coil firing sequence. The 18X reference pulses are passed from the CKP sensor to the ICM on the CKP sensor 1 circuit. The 18X reference pulses are used for fuel injection and ignition control. After the ICM receives both signals, the ICM passes the 18X and 3X reference signals to the PCM. The CMP and the CKP sensors share a 12 volt reference and low reference circuit. The CKP sensor consists of the following circuits:
-A 12 volt reference
-A low reference
-A CKP sensor 1 signal
-A CKP sensor 2 signal
OBDII Code P1350 - Ignition Control System - AutoCodes.com
P1350 Code - Ignition Control System

What are the Possible Causes of the DTC P1350?

  • Faulty Ignition Control Module
  • Ignition Control Module harness is open or shorted
  • Ignition Control Module circuit poor electrical connection

How to Fix the DTC P1350?

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 P1350 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 P1350 code?

Need more information on how to fix the P1350 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1350 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 P1350 Code

1. What does OBDII code P1350 mean?

Code P1350 refers to a malfunction in the Ignition Control System, specifically related to the IDM input signal to the PCM.

2. What are the common symptoms of OBDII code P1350?

Common symptoms of code P1350 include engine misfires, rough idling, lack of power, and in some cases, the Check Engine Light may illuminate.

3. What are the possible causes of OBDII code P1350?

Potential causes of code P1350 include faulty ignition control module, defective ignition coil, wiring issues, or a problem with the camshaft position sensor.

4. How can I diagnose OBDII code P1350?

Diagnosing code P1350 involves using a scan tool to retrieve the code, checking the ignition control module, inspecting wiring connections, and testing the camshaft position sensor.

5. Can I still drive my vehicle with OBDII code P1350?

It is not recommended to drive your vehicle with code P1350 present, as it can lead to poor engine performance and potentially cause further damage if left unresolved.

6. How do I repair OBDII code P1350?

Repairing code P1350 involves replacing any faulty components identified during the diagnostic process, such as the ignition control module, ignition coil, or fixing wiring issues.

7. Will resetting the Check Engine Light resolve OBDII code P1350?

Simply resetting the Check Engine Light will not fix the underlying issue causing code P1350. Proper diagnosis and repair are necessary to address the problem effectively.

8. How much does it cost to fix OBDII code P1350?

The cost of repairing code P1350 can vary depending on the specific cause of the issue, the cost of parts, and labor charges. It is recommended to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1350?

While some DIY enthusiasts may have the skills to diagnose and repair code P1350, it is a complex issue that may require specialized tools and knowledge. Consulting a professional is advisable.

10. Is OBDII code P1350 a common problem in certain vehicle makes and models?

Code P1350 may be more common in vehicles with ignition control system components prone to wear and failure. It is recommended to check for any manufacturer recalls or technical service bulletins related to this code.

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