What Does P1349 Mean?
P1349 indicates an open circuit condition in the ignition coil power output stage 2. The ECU cannot complete the primary circuit for ignition coil 2 because there is a break in the electrical path. Without primary current flow, no magnetic field is generated in the coil and no spark occurs on the affected cylinder, causing a dead misfire.
Safety Warning
Complete loss of spark on one cylinder reduces engine power and causes excessive unburned fuel to enter the exhaust. This can overheat and destroy the catalytic converter if driving continues.
Common Causes
30%
Disconnected or improperly seated ignition coil 2 connector
25%
Broken or severed wire in the coil 2 control circuit
25%
Ignition coil 2 with open primary winding (internal failure)
12%
Corroded connector terminals preventing electrical contact
8%
ECU output pin for coil 2 damaged or not making contact
Diagnostic Steps
1
Verify the ignition coil 2 connector is properly seated. Disconnect and reconnect it, checking for resistance or damage as you do so.
2
Measure ignition coil 2 primary winding resistance with a multimeter. An open-circuit reading (OL) indicates a failed coil.
3
If the coil resistance is within specification, perform a continuity test on the control wire from the coil connector to the corresponding ECU pin.
4
Inspect the wiring harness for physical damage, particularly at flex points, connector entries, and areas near engine mounts where vibration can fatigue wires.
5
Check the ECU connector for backed-out pins or corrosion on the coil 2 driver output terminal.
Estimated Repair Cost
$50 - $300
Parts + labor, varies by vehicle and location
P1349 indicates an open circuit condition in the ignition coil power output stage 2. The ECU cannot complete the primary circuit for ignition coil 2 because there is a break in the electrical path. Without primary current flow, no magnetic field is generated in the coil and no spark occurs on the af...
The most common cause of P1349 (Ignition Coil Power Output Stage 2 Open Circuit) is: Disconnected or improperly seated ignition coil 2 connector
Typical repair costs for P1349 range from $50 to $300, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Complete loss of spark on one cylinder reduces engine power and causes excessive unburned fuel to enter the exhaust. This can overheat and destroy the catalytic converter if driving continues.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1349 to identify the root cause.
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Quick Info
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Powertrain
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Ignition System
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