AutoCodesGeneric – P1320

P1320 Code - Ignition Signal

Quick Answer

The ignition signal from the Engine Control Module (ECM) is sent to and amplified by the power transistor. Common causes include Faulty power transistor unit built into ignition coil, Ignition primary circuit is open or shorted (circuit to ignition coils), Ignition primary circuit poor electrical connection (circuit to ignition coils). 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
P1320 indicates Ignition Signal.
Common causes
Common causes include Faulty power transistor unit built into ignition coil, Ignition primary circuit is open or shorted (circuit to ignition coils), Ignition primary circuit poor electrical connection (circuit to ignition coils).
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 27,767
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 20, 2022
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1320 Description

The ignition signal from the Engine Control Module (ECM) is sent to and amplified by the power transistor. The power transistor turns on and off the ignition coil primary circuit. This on-off operation induces the proper high voltage in the coil secondary circuit. The Diagnostic Trouble Code (DTC) will be set when the ignition signal in the primary circuit is not sent to Engine Control Module during engine cranking or running.
OBDII Code P1320 - Ignition Signal - AutoCodes.com
P1320 Code - Ignition Signal

What are the Possible Causes of the DTC P1320?

  • Faulty power transistor unit built into ignition coil
  • Ignition primary circuit is open or shorted (circuit to ignition coils)
  • Ignition primary circuit poor electrical connection (circuit to ignition coils)
  • Faulty ignition system condenser
  • Crankshaft position sensor circuit

How to Fix the DTC P1320?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1320 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 P1320 code?

Need more information on how to fix the P1320 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1320 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 P1320 Code

No Frequently Asked Questions about P1320 Code found.

Discuss the causes and fixes for P1320 OBDII Code

Code P1320 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play