What Does P1296 Mean?
The PCM has detected that the high-side injector power circuit on Bank 1 is shorted either to ground or to battery voltage. This prevents proper injector control and can cause injectors to fire continuously or not at all.
Safety Warning
Engine may flood, run extremely rough, or fail to start. Risk of fire if short is causing excessive current draw. Do not drive until repaired.
Common Causes
35%
Chafed wiring harness creating short to ground or power
30%
Failed fuel injector with internal short
20%
Damaged injector connector pins touching each other
10%
Failed PCM high-side driver transistor shorted
5%
Aftermarket alarm or accessory wiring interfering with injector circuit
Diagnostic Steps
1
Step 1: Disconnect all Bank 1 fuel injectors and visually inspect connectors and pins
2
Step 2: Check for voltage on injector high-side circuit with key on and injectors disconnected (should see battery voltage)
3
Step 3: Measure resistance from high-side circuit to ground (should be open/infinite) and to battery positive (should show resistance through PCM)
4
Step 4: Inspect harness routing for damage, especially near hot engine components or sharp edges
5
Step 5: Test each injector individually for internal shorts using ohmmeter
Estimated Repair Cost
$200 - $1,400
Parts + labor, varies by vehicle and location
The PCM has detected that the high-side injector power circuit on Bank 1 is shorted either to ground or to battery voltage. This prevents proper injector control and can cause injectors to fire continuously or not at all.
The most common cause of P1296 (Injector High Side Short To GND Or VBATT - Bank 1) is: Chafed wiring harness creating short to ground or power
Typical repair costs for P1296 range from $200 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine may flood, run extremely rough, or fail to start. Risk of fire if short is causing excessive current draw. Do not drive until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1296 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
