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 part of the car that sprays fuel into the engine for cylinder 1 is leaking. It's like a water gun that doesn't stop shooting water.
The P029D code indicates that the fuel injector for cylinder 1 is leaking fuel, which can cause engine performance issues.
The P029D code is triggered when the Engine Control Module (ECM) detects a leak in the fuel injector for cylinder 1. This can lead to an imbalance in the air-fuel mixture, causing the engine to run inefficiently or misfire.
• Check Engine Light is on
• Poor fuel economy
• Rough idling or engine misfire
• Faulty fuel injector
• Damaged or worn injector seals
• Fuel pressure too high
Fuel Injector: A device that sprays fuel into the engine's cylinders.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the P029D code.
• Inspect the fuel injector for cylinder 1 for visible leaks.
• Check the fuel pressure to ensure it is within specifications.
• Replace the faulty fuel injector.
• Replace damaged injector seals.
• Adjust the fuel pressure regulator if necessary.
• OBD-II scanner
• Fuel pressure gauge
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect fuel injectors for leaks.
• Use quality fuel to prevent injector clogging.
• Perform routine maintenance checks.
Engine Performance
• Avoid driving extensively with this code active.
• Seek professional diagnosis and repair promptly.
Fuel injectors may be covered under the powertrain warranty. Check with your vehicle manufacturer.
This code has been associated with injector issues in various vehicles, particularly those with high mileage.
Moderate – Driving with a leaking injector can cause further engine damage over time.
Ignoring this code may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle idling or under load
The fuel injector for cylinder 1 is located on the engine, near the intake manifold.
Q: Can I drive with a P029D code?
A: It's not recommended to drive extensively with this code, as it can lead to engine damage.
Q: How do I know if my injector is leaking?
A: You may notice fuel smell, poor performance, or visible fuel around the injector.
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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.