Fuel Pump Control Out Of Range
The ECU detected that the fuel pump's electrical control signal is outside the expected operating range, like a dimmer switch stuck at an extreme position. This prevents proper fuel delivery pressure regulation.
The ECU monitors the fuel pump relay control voltage and current draw to ensure the pump operates within spec. It compares actual pump control signals against expected duty cycle ranges. Out-of-range readings indicate a short, open circuit, or failing pump.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Fuel Pump Control Voltage | 11-14V with PWM signal | Below 8V or above 16V, or no signal |
| Pump Current Draw | 4-8 amps nominal | Below 2A or above 12A |
Code P1241 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, P1241 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.