Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part that helps spray fuel into the engine for cylinder number 11. It's like a broken wire that stops the fuel from getting in.
The P3140 code indicates that the circuit controlling the fuel injector for cylinder 11 is open, meaning there's a break or disconnection in the electrical path.
The engine control module (ECM) has detected an open circuit condition in the low side of the high-pressure injector for cylinder 11. This can prevent the injector from operating properly, leading to engine performance issues.
• Engine misfire
• Poor fuel economy
• Check engine light on
• Faulty injector
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
Injector: A device that sprays fuel into the engine.
• Inspect the injector wiring and connectors for damage.
• Test the injector for proper resistance.
• Check the ECM for faults.
• Repair or replace damaged wiring.
• Replace the faulty injector.
• Reprogram or replace the ECM if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$200 - $800
Moderate
• Audi A8
• Volkswagen Phaeton
• Porsche Cayenne
• Regular maintenance checks
• Ensure proper electrical connections
• Use quality fuel
Engine Performance
• Have the car inspected by a professional mechanic.
• Avoid driving the vehicle if it shows severe symptoms.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles that have high-pressure fuel systems, particularly in luxury models.
High – This issue can lead to significant engine performance problems if not addressed promptly.
Driving with an engine misfire can cause further damage and may not comply with emissions regulations.
• Engine running
• Vehicle at operating temperature
The high-pressure injector for cylinder 11 is located on the engine block, typically near the intake manifold.
Q: Can I drive with a P3140 code?
A: It's not recommended as it can cause further engine damage.
Q: How do I clear a P3140 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
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.