Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the fuel pressure in part of the engine isn't high enough. It's like when you try to drink from a straw, but there's not enough juice in the cup.
This code indicates that the fuel pressure in the fuel rail of bank 2 has dropped below the minimum threshold set by the manufacturer.
The P302D code is triggered when the Powertrain Control Module (PCM) detects that the fuel rail pressure in bank 2 is lower than the specified minimum. This can affect the engine's performance and efficiency.
• Check Engine Light is on
• Poor engine performance
• Engine misfires
• Faulty fuel pump
• Clogged fuel filter
• Leaking fuel injector
Fuel Rail: A pipe that delivers fuel to the engine's fuel injectors.
PCM: Powertrain Control Module, the vehicle's main computer that controls engine and transmission functions.
• Inspect the fuel system for leaks.
• Check the fuel pressure using a fuel pressure gauge.
• Test the fuel pump and fuel injectors for proper operation.
• Replace the faulty fuel pump.
• Clean or replace the fuel filter.
• Repair or replace leaking fuel injectors.
• Fuel pressure gauge
• Diagnostic scanner
• Wrench set
$200 - $800
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly replace the fuel filter.
• Use high-quality fuel.
• Perform regular maintenance checks.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the fuel system inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on fuel system components.
This code has been associated with fuel delivery issues in various vehicle models, often due to aging fuel system components.
High – This issue can lead to engine performance problems and should be addressed promptly.
Operating a vehicle with this issue may violate emissions regulations and could pose a safety risk.
• Engine running
• Fuel system pressurized
The fuel rail is located on the engine, typically on the side of the cylinder head for bank 2.
Q: Can I drive with a P302D code?
A: It's not recommended to drive with this code, as it can lead to poor engine performance and potential safety issues.
Q: How do I reset the P302D code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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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.