Fault code P1500 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P1500 – Vehicle Speed Sensor Intermittent

P1500: Causes, signs and repairs

Error code P1500 is displayed and the check engine light is on - what does this mean?

The DTC P1500 is recognized by the OBD system when there is a problem with the fuel pump control or fuel pressure system. This manufacturer-specific fault code mainly occurs in Honda and Acura vehicles and indicates a fault in the fuel supply system.

What can cause this fault code?

Defective fuel pump
Damaged wiring to the fuel pump
Defective fuel pump relay
Loose or corroded plug connections
Faulty fuel pressure regulating valve
Clogged fuel filter
Defective fuel pump control unit
Low fuel level in the tank
Damaged fuel pressure sensor

What symptoms occur in parallel with fault code P1500?

Starting problems: The vehicle is difficult or impossible to start
Engine misfires: Irregular engine running and jerky driving
Loss of power: Reduced engine power during acceleration
Engine stalling: Engine stalls while driving
Smell of fuel: Smell of gasoline in or around the vehicle
Unsteady idling: Engine runs out of round at idling speed

How can the P1500 error code problem be rectified?

Repairing the P1500 code requires a systematic approach to identify the exact cause.
Replace the fuel pump if it is defective or does not build up sufficient pressure
Check fuel pump relay and replace if necessary to ensure proper power supply
Check wiring to fuel pump for damage, corrosion or loose connections and repair
Replace the fuel filter if it is clogged and obstructing the fuel flow
Test the fuel pressure regulating valve and replace if it is not working properly
Calibrate or replace fuel pressure sensor if incorrect values are being transmitted
Diagnose fuel pump control unit and replace if defective

FAQ - Frequently asked questions about DTC P1500

Can I continue driving with error code P1500?

It is not recommended to continue driving with code P1500, as this can lead to engine damage or complete failure of the fuel supply. Visit a workshop as soon as possible.

How much does it cost to repair error code P1500?

Depending on the cause, the repair costs vary between €150 (relay replacement) and €800 (fuel pump replacement). A precise diagnosis is required for a cost estimate.

Is error code P1500 the same for all vehicle brands?

No, P1500 is a manufacturer-specific code that is mainly used by Honda and Acura. Other manufacturers use different codes for similar problems.

Can I repair the error code P1500 myself?

Simple checks such as relay replacement or fuse testing are possible, but work on the fuel system requires specialist knowledge and should be carried out by a workshop.

How long does it take to diagnose error code P1500?

A professional diagnosis usually takes 1-2 hours, depending on the complexity of the problem and the accessibility of the components.

Will the error code P1500 return after the repair?

If the root cause has been repaired correctly, the code should not recur. If it does recur, it is possible that not all affected components have been repaired.

Vehicles in which fault code P1500 occurs most frequently

Error code P1500 is a manufacturer-specific DTC that mainly indicates problems with the fuel pump control system and can occur in various vehicle models, but is most common in the following vehicles:

Honda: Civic, Accord, CR-V, Pilot, Odyssey (1996-2015)
Acura: Integra, TL, TSX, MDX, RDX (1996-2014)
Isuzu: Rodeo, Trooper (1998-2004)
If the code P1500 occurs in your vehicle, you should first have an OBD diagnosis carried out to identify the exact cause. As this is a safety-relevant system, it is advisable to have the vehicle checked promptly at a qualified workshop. An early repair can prevent costly consequential damage to the engine and ensure the operational safety of the vehicle.

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