OBD-II code P0288 indicates that the powertrain control module (PCM) has detected a lower-than-expected voltage in the fuel injector circuit for cylinder 10. This typically suggests an electrical issue, such as a short, open circuit, or high resistance in the wiring or injector itself.
The injector itself may be internally shorted or clogged, causing low voltage in the circuit. This is a common cause for this code.
Damaged, corroded, or loose wiring or connectors in the injector circuit can cause low voltage. Inspect for chafing, breaks, or poor connections.
Corrosion or poor connections at the injector or PCM can increase resistance, leading to low voltage readings.
While rare, the PCM’s injector driver circuit for cylinder 10 could malfunction, causing incorrect voltage readings. This is unlikely unless other injector circuits are also failing.
No, the PCM is rarely the cause of this code. Most cases involve a faulty injector, wiring issues, or poor connections. Replace the PCM only after all other possibilities are ruled out.
Driving with this code may cause engine misfires, reduced power, or damage to the catalytic converter due to unburned fuel. It’s best to diagnose and repair the issue promptly.
Test the injector’s resistance and voltage supply. If resistance is out of spec or no voltage is present, inspect the wiring and connectors before replacing the injector.
Cleaning may help if the injector is clogged but won’t resolve electrical issues like shorts or open circuits. Electrical faults require replacement or wiring repairs.