Severity: Fix right away. Driving risks expensive damage or a breakdown.
The computer has found a fault in the circuit that drives one or more fuel injectors, so it cannot control fuel delivery reliably.
Test each injector's resistance and wiring, then replace the faulty injector or repair the circuit.
A dead injector can cause a misfire and send raw fuel into the exhaust, which can overheat and ruin the catalytic converter.
Avoid driving until it is checked — towing is the safer choice. A dead injector can cause a misfire and send raw fuel into the exhaust, which can overheat and ruin the catalytic converter.
The most common causes are: Failed fuel injector; Damaged injector wiring or connector; Shorted injector circuit; Failing engine computer driver. A scan tool and a visual check of the parts above is where a technician starts.
Test each injector's resistance and wiring, then replace the faulty injector or repair the circuit.
