P0260 - Injection Pump Fuel Metering Control 'B' Intermittent
The P0260 code indicates an intermittent fault in the fuel metering control circuit for the injection pump, specifically related to the 'B' position (cam/rotor/injector). This typically points to a problem with the fuel injection pump's internal metering mechanism, such as a sticking metering valve, faulty actuator, or electrical issues in the control circuit. The ECM detects an intermittent signal or performance deviation, leading to this code. Common causes include a failing injection pump, wiring harness issues, or a defective fuel metering control solenoid.
01. Most Common Causes
- Faulty injection pump metering control solenoid
- Wiring or connector issues in the fuel metering control circuit
- Internal injection pump failure (cam/rotor wear)
- ECM software or hardware malfunction
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine hesitation or rough idle
- Poor fuel economy
- Hard starting or stalling
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the fuel metering control solenoid resistance and actuation with a multimeter.
Step 4: Perform a fuel pressure test to verify pump output.
Step 5: If electrical tests pass, suspect internal pump failure and replace injection pump.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the intermittent metering can cause engine stalling or poor performance, potentially leading to unsafe driving conditions.
How much does it cost to fix?▼
Repair costs vary widely; if it's a wiring issue, it may be under $200, but injection pump replacement can range from $500 to $1500 or more, including labor.