Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the electrical power going to a group of fuel injectors. It's like a light bulb not getting electricity, so it can't turn on.
The engine control module (ECM) monitors the voltage supply to the fuel injector circuits. If it detects an open circuit or insufficient voltage in the fuel injector group D, it triggers the P2155 code.
The P2155 code indicates that there is an issue with the electrical circuit that supplies voltage to a specific group of fuel injectors, labeled as Group D. This could be due to an open circuit, a short, or insufficient voltage supply, which prevents the injectors from functioning properly.
• Engine misfires
• Poor fuel economy
• Check Engine Light is on
• Rough idle
• Reduced engine performance
• Faulty fuel injector
• Damaged wiring or connectors
• Blown fuse or relay
• Faulty ECM
• Corroded connections
ECM: Engine Control Module, the computer that controls engine functions.
Fuel Injector: A component that sprays fuel into the engine's cylinders.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Check the fuel injector group D for proper operation.
• Test the voltage supply to the injectors.
• Inspect the ECM for faults.
• Repair or replace damaged wiring or connectors.
• Replace faulty fuel injectors.
• Replace blown fuses or faulty relays.
• Repair or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain electrical connections.
• Use high-quality fuel to prevent injector clogging.
• Perform routine engine maintenance.
Engine Performance
• Don't ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you're unsure.
• Regular maintenance can prevent such issues.
Check with your vehicle's manufacturer for specific warranty coverage related to the ECM and fuel injectors.
This code has been associated with issues in vehicles with electronic fuel injection systems, particularly in models with complex injector groupings.
Moderate – While the vehicle may still run, ignoring this code can lead to poor performance and potential engine damage.
Driving with a malfunctioning fuel injector circuit can lead to increased emissions and may not comply with local emissions regulations.
• Engine running
• Battery fully charged
Fuel injectors are typically located on the engine, attached to the intake manifold or cylinder head.
Q: Can I drive with a P2155 code?
A: It's possible to drive, but it's not recommended as it can lead to further engine damage and poor performance.
Q: What happens if I ignore the P2155 code?
A: Ignoring the code can result in increased fuel consumption, engine misfires, and potential damage to the engine or catalytic converter.
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Universal · Digital multimeter
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.