What Does P1294 Mean?
The PCM has detected an open circuit in the high-side driver circuit for one or more fuel injectors on Bank 2, and the engine is unable to achieve target idle speed. This indicates a break in the power supply circuit to the injectors or a failed injector driver in the PCM.
Safety Warning
Vehicle may experience severe misfires, stalling, or inability to start. Do not drive extended distances as this can damage the catalytic converter.
Common Causes
35%
Open circuit in injector wiring harness or connector
30%
Failed fuel injector with open coil winding
20%
Failed PCM injector driver circuit
10%
Corroded or damaged injector power supply circuit
5%
Blown injector fuse or fusible link
Diagnostic Steps
1
Step 1: Visually inspect all Bank 2 injector connectors and wiring for damage, corrosion, or loose connections
2
Step 2: Check injector power supply fuses and fusible links for continuity
3
Step 3: Measure resistance of each Bank 2 injector coil (typically 12-16 ohms); replace any with open circuit
4
Step 4: Backprobe injector connectors and test for voltage supply when key is on
5
Step 5: If all injectors and wiring test good, suspect PCM driver circuit failure
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit in the high-side driver circuit for one or more fuel injectors on Bank 2, and the engine is unable to achieve target idle speed. This indicates a break in the power supply circuit to the injectors or a failed injector driver in the PCM.
The most common cause of P1294 (Injector High Side Open - Bank 2/Target idle not reached) is: Open circuit in injector wiring harness or connector
Typical repair costs for P1294 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience severe misfires, stalling, or inability to start. Do not drive extended distances as this can damage the catalytic converter.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1294 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Manufacturer
Recommended Tools
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