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 how the car's computer controls the fuel injectors on one side of the engine. It's like when your toy robot's arm doesn't move right because the remote isn't working well.
The P31ED code indicates an issue with the Engine Control Module (ECM) related to the high-pressure fuel injectors on Bank 2, which is one side of the engine. It suggests that the ECM is using replacement values due to a fault.
This code is triggered when the ECM detects a malfunction in the control of the high-pressure fuel injectors on Bank 2. The ECM may use default or replacement values to maintain engine operation, which can affect performance and emissions.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty high-pressure fuel injector
• Wiring or connection issues in the injector circuit
• Defective Engine Control Module (ECM)
ECM: Engine Control Module, the computer that manages engine functions
Injector: A device that sprays fuel into the engine
• Scan the vehicle for additional codes
• Inspect the wiring and connections to the injectors
• Test the high-pressure injectors on Bank 2
• Replace faulty high-pressure injector
• Repair or replace damaged wiring or connectors
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Fuel injector tester
$200 - $1000
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regular maintenance checks
• Use quality fuel
• Inspect and clean injectors periodically
Engine Performance
• Avoid driving the car hard until repaired
• Get the issue diagnosed promptly
• Keep up with regular maintenance
Check with your vehicle manufacturer or dealer for specific warranty coverage related to the ECM and injectors.
This code is relatively uncommon and typically associated with modern vehicles equipped with direct fuel injection systems.
Moderate – While the vehicle may still be drivable, it could lead to increased fuel consumption and potential engine damage if not addressed.
Driving with this code may not meet emissions standards and could lead to further engine damage.
• Engine at operating temperature
• Vehicle in closed-loop operation
The high-pressure injectors are located on the engine's Bank 2, typically on the opposite side of the engine from Bank 1.
Q: Can I drive my car with a P31ED code?
A: It's possible to drive short distances, but it's best to fix the issue soon to avoid further damage.
Q: Will a P31ED code affect my car's fuel efficiency?
A: Yes, it can lead to increased fuel consumption and reduced performance.
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