P0260 Fuel metering control, injection pump B, intermittent signal

P0260 – OBD-II Trouble Code Technical Description

P0260 – Intermittent fuel metering control of injection pump B (cam/rotor/injector)

What does trouble code P0260 mean?

OBD2 DTC P0260 means that an intermittent injection pump "B" (cam/rotor/injector) fuel metering control signal is detected.

1. **General Description of Code P0260:**

   – The symbol “P” in the first position of the code indicates the transmission system (engine and transmission).

   – “0” in the second position means that this is a general OBD-II fault code.

   – “2” in the third character position of the code indicates a malfunction in the fuel and air metering system, as well as in the auxiliary emission control system.

   – The last two characters “60” are the DTC number.

2. **P0260 Code Distribution:**

   – This code typically applies to many OBD-II equipped diesel engines, including Ford, Chevy, GMC, Ram and others, but may also appear on some Mercedes Benz and VW models.

3. **Components and control circuit:**

   – The injection pump “B” metering control circuit is installed inside or on the side of the injection pump attached to the engine.

   – It consists of a fuel rack position (FRP) sensor and a fuel quantity drive.

4. **FRP sensor operation:**

   – The FRP sensor converts the amount of diesel fuel supplied by the fuel quantity actuator into an electrical signal to the powertrain control module (PCM).

   – The PCM uses this voltage signal to adjust fuel delivery to the engine based on operating conditions.

5. **Causes of P0260 Code:**

   – This code may be caused by mechanical or electrical problems in the system.

   – It is important to refer to your specific vehicle repair manual to determine which part of the “B” circuit applies to your vehicle.

6. **Troubleshooting Steps:**

   – Troubleshooting steps may vary depending on manufacturer, FRP sensor type, and wire color.

7. **Additional information:**

   – Code P0260 indicates a malfunction in the injection pump “B” fuel metering control circuit.

   – It is important to thoroughly diagnose and eliminate the cause of this malfunction for proper engine operation.

Possible reasons

Causes of a P0260 code may include:

1. Open circuit in the signal circuit to the FRP sensor - Maybe.
2. FRP sensor signal circuit short to voltage - Maybe.
3. Short to ground in FRP sensor signal circuit - Maybe.
4. Lost power or ground on the FRP sensor - Maybe.
5. FRP sensor is faulty – probably.
6. PCM failure – unlikely.

The Engine Control Module (ECM) monitors the position of the high pressure fuel pump metering valve by monitoring commands to the valve from the ECM. If the valve does not move successfully on every command, it will cause the P0260 code to set and the Check Engine Light to turn on.

This problem may be due to an intermittent break in the wiring or connector on the injection pump (high pressure fuel pump). There may also be a malfunction in the internal circuit of the high pressure fuel pump metering valve.

What are the symptoms of a fault code? P0260?

When the Check Engine Light illuminates and a DTC is stored in the ECM, the following may occur:

1. The engine may run with a mixture that is too lean or too rich, depending on where the fuel valve is faulty.
2. Reduced engine power and poor operating conditions may occur.
3. Since the problem is intermittent, symptoms may also appear periodically. The engine may run smoothly when the valve is functioning properly and experience roughness when it is not functioning.

Symptoms associated with DTC P0260 may include:

• Malfunction indicator light (MIL) is on.
• Reduced fuel efficiency.

How to diagnose a fault code P0260?

For a more structured text, let's remove duplication and simplify the information:

1. Check the Technical Service Bulletins (TSB) for your vehicle to see if there are known solutions to the P0260 code.
2. Locate the FRP sensor on the car and note the condition of the connector and wiring.
3. Check wiring and connectors for damage.
4. If you have a scan tool, clear the trouble codes and see if P0260 comes back.
5. If the code returns, test the FRP sensor and related circuits. Check the voltage at the sensor.
6. Check the signal wire and its integrity.
7. If all of the above steps do not resolve the problem, the FRP sensor or PCM may need to be replaced.
8. It is recommended that you consult a qualified automotive diagnostician if in doubt.
9. To install the PCM correctly, it must be programmed or calibrated for a specific vehicle.
10. When performing diagnostics, consider the intermittent nature of the problem and perform rocking tests and visual inspection.
11. Perform the manufacturer's spot test to ensure the condition of the circuits and avoid replacing faulty components.

This way, you will have a clearer, more consistent guide to diagnosing and resolving the P0260 code.

Diagnostic errors

1. Clear ECM error codes before analyzing freeze frame data.
2. After clearing P0260 codes, be sure to retest the system. Clearing ECM codes is possible after this step.
3. Do not forget that before starting repairs, it is important to test the system, even if the error occurs periodically.

How serious is the fault code? P0260?

The P0260 code indicates an intermittent failure in the fuel injection pump control, which can be either mechanical or electrical in nature. This fault requires attention and diagnosis to ensure proper operation of the vehicle's engine.

The severity of this problem depends on its nature. If the cause is a mechanical failure, it could be serious, but if it is an electrical failure, then it is perhaps less critical since the PCM can handle it.

Don't ignore this problem. It is recommended to check and fix it in advance to avoid more serious consequences.

Please remember that each vehicle is unique and supported features may vary by model, year and configuration. Check the available features for your vehicle by connecting a scanner and running diagnostics in the appropriate application. Please also be aware that the information on this site is for informational purposes only and should be used at your own risk. Mycarly.com assumes no liability for errors or omissions or for consequences of the use of this information.

What repair will help eliminate the code? P0260?

1. Replace the injection pump.
2. Clear the codes and road test the vehicle to ensure the code does not return.
3. Repair or replacement of the battery in the fuel injection pump circuit.
4. Repair links or connections for loose or corroded connections.

What is P0260 Engine Code [Quick Guide]

Trouble P0260 occurs on diesel vehicles with an injection pump when the system cannot properly control the flow of fuel to the cylinders. This can be caused by a variety of reasons, from simple problems with the wires to the need to completely replace the fuel injection pump. Therefore, it is important to check for an intermittent error and make sure it is diagnosed before starting repair work.