If your car’s check engine light came on and a scan tool showed P1041, you’re not seeing a generic fault it’s a manufacturer-specific code tied to the fuel system, most commonly in Honda and Acura vehicles. Unlike generic OBD-II codes (like P0171 or P0300), P1041 doesn’t appear in standard SAE definitions. That means its meaning depends entirely on your vehicle’s make, model, and year and misreading it can send you down the wrong repair path.

What does P1041 actually mean?

P1041 is a powertrain-related diagnostic trouble code used by Honda and Acura to indicate a problem with the fuel pump control module or its circuit. Specifically, it often points to an abnormal voltage reading either too high or too low in the signal sent from the fuel pump control module to the engine control unit (ECU). It’s not about fuel pressure itself, but how the ECU is receiving or interpreting data from the module that manages the fuel pump’s operation.

Why would someone look up the meaning of code P1041?

You’d search for the meaning of code P1041 when your scan tool returns it after the check engine light illuminates especially if you’re experiencing symptoms like hard starting, stalling at idle, or sudden loss of power under acceleration. It’s also common after refueling, during hot weather, or following electrical work near the fuel tank. Since this code isn’t covered in basic repair manuals or generic OBD-II references, drivers and DIY mechanics need accurate, vehicle-specific context not just a vague definition.

Is P1041 the same across all cars?

No. While Honda and Acura use P1041 consistently for fuel pump control module issues, other brands may assign it to completely different systems or not use it at all. For example, some older GM models use P1041 for throttle position sensor correlation faults, though that’s rare today. Always confirm your vehicle’s make and year before assuming what the code means. You can find the exact interpretation in your factory service manual or through a dealer-level scan tool.

What are typical causes behind P1041?

The most frequent reasons include:

• A failing fuel pump control module (often located inside or near the fuel tank)
• Corroded, loose, or damaged wiring or connectors between the module and ECU
• Low system voltage (e.g., weak battery or failing alternator affecting signal integrity)
• Water intrusion into the fuel pump assembly or control module housing

Note: A bad fuel pump itself rarely triggers P1041 directly this code usually reflects a communication or control issue, not mechanical pump failure. If you’ve already replaced the pump but the code returned, the control module or its wiring is the more likely culprit.

What mistakes do people make with P1041?

One common error is replacing the fuel pump without checking the control module first. Another is clearing the code and assuming the problem is gone P1041 often returns quickly if the root cause isn’t addressed. Some users also confuse it with P0251 (injector pump malfunction) or P0087 (fuel rail pressure too low), which involve different systems entirely. Using a generic OBD-II reader without manufacturer-specific mode may also misreport or fail to read P1041 correctly.

Where can I find reliable details about P1041?

The best source is your vehicle’s official service documentation. For Honda and Acura owners, the detailed breakdown of P1041 error causes helps distinguish between wiring faults and module failures. You’ll also want to review the step-by-step explanation of how the code sets, including voltage thresholds and test procedures. If you're troubleshooting live data, the clear P1041 error definition includes expected signal ranges and connector pinouts.

What should you do next?

Start by verifying battery voltage and checking for corrosion at the fuel pump control module connector usually under the rear seat or near the fuel tank. Use a multimeter to test reference voltage and ground continuity. If those check out, monitor live data for fuel pump control module output voltage with a compatible scan tool. If the signal drops out or reads outside 0.5–4.5V while cranking, the module is likely faulty. Avoid skipping diagnostics and jumping straight to replacement it’s easy to spend $300+ on a new module when a $12 connector repair fixes it.

Before ordering parts, confirm compatibility: Honda part numbers for the fuel pump control module vary even within the same model year depending on transmission type and trim level. You can cross-reference yours using your VIN at Honda Tech Info.

Quick action checklist:

1. Check battery and charging system voltage
2. Inspect fuel pump control module connector for damage or moisture
3. Test wiring continuity and ground integrity
4. Scan for related codes (e.g., P0606, P0622) that suggest ECU or power supply issues
5. Consult the P1041 error causes guide before ordering replacement parts