Cylinder 11 Injector Circuit High
The engine control computer detected that cylinder 11's fuel injector isn't responding correctly—the electrical signal is too strong or the circuit isn't shutting off properly. Think of it like a faucet that won't fully close, causing water pressure to stay high.
The ECU monitors the injector circuit's voltage and current during activation and deactivation cycles. It detects when the voltage remains abnormally high during the off-cycle, indicating a circuit resistance problem or stuck injector solenoid. The ECU compares actual circuit behavior against expected timing and voltage profiles.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Injector Off-State Voltage | 0-0.5V | Above 0.5V or sustained high voltage |
| Circuit Resistance | 2-6 ohms | Below 2 ohms or open circuit |
Code P0293 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0293 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.