P0282 indicates the powertrain control module (PCM) has detected a low voltage condition in the electrical circuit controlling the fuel injector on cylinder 8. This typically means the injector is not receiving the expected signal or its solenoid coil has dropped out of the PCM's expected resistance range, often triggering a misfire on that cylinder.
The injector's solenoid coil is the most common point of failure. Internal shorts or open windings in the coil cause the circuit voltage to drop below the PCM's threshold.
Moisture intrusion, heat cycling, and vibration can corrode the injector pigtail connector or back out the terminals, creating high resistance or an intermittent open.
Chafed, pinched, or heat-damaged wires between the injector and PCM can cause voltage drop, an open circuit, or a short to ground on the injector control wire.
Severely clogged or stuck injectors can alter current draw and, in extreme cases, cause circuit faults. Fuel contamination can also degrade injector windings over time.
A failed output driver transistor or internal circuit trace on the PCM injector control circuit is possible but uncommon; this is typically investigated only after the injector and external wiring have been ruled out.
Short trips are usually possible, but a persistent misfire on cylinder 8 can overheat the catalytic converter, cause raw fuel to enter the exhaust, and lead to more expensive damage if driven for long periods.
No. In the vast majority of cases P0282 is caused by the injector itself, its connector, or the wiring harness. Replacing or reprogramming the PCM is rarely necessary and is one of the most commonly recommended but incorrect fixes for this code; the module should only be considered after the injector, connector, and wiring have all been verified good.
Not directly. P0282 specifically points to the injector circuit, not ignition. A misfire on cylinder 8 may accompany it, but the code itself is set by injector electrical monitoring, so ignition components are not the root cause.
Clearing the code only erases the fault memory. If the underlying electrical problem is still present, the code will return as soon as the PCM runs its next monitor cycle.