P0260 medium Severity

P0260: Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector)

Intermittent engine performance issues, reduced power, possible stalling

Overview

P0260 indicates an intermittent fault in the injection pump fuel metering control "B" circuit, affecting the cam/rotor/injector signal and potentially leading to reduced engine performance and increased emissions.

Common Symptoms

  • Check Engine Light (CEL) illumination
  • Rough idle or engine misfire
  • Reduced engine power or hesitation
  • Poor fuel economy
  • Intermittent stalling or loss of power

Most Common Causes

Intermittent wiring/connectors damage in the injection pump metering control circuit high

Physical wiring issues such as corrosion, chafed insulation, or loose connectors often cause intermittent signal faults.

Faulty injection pump fuel metering control solenoid or actuator ("B" circuit) medium

Internal pump control components can fail intermittently, causing erratic signals to the PCM.

Faulty Fuel Rack Position (FRP) sensor or related sensor in the pump medium

Sensor faults can produce incorrect feedback to the ECM, triggering the P0260 code.

Faulty PCM or software calibration issue low

Rare but possible, especially if no other faults are found after thorough diagnostics.

Diagnostic Steps

  1. Connect a professional OBD-II scanner and retrieve active and pending codes
    Expected: Code P0260 present, possibly with related codes
    Interpretation: Confirms the fault and identifies if additional systems are affected.
  2. Visually inspect the injection pump wiring harness and connectors for damage, corrosion, or looseness
    Expected: Signs of wear, corrosion, melted insulation, loose terminals
    Interpretation: Physical damage may cause intermittent circuit faults; repair or reconnect as needed.
  3. Check voltage, resistance, and continuity of the metering control "B" circuit using a multimeter
    Expected: Stable voltage and correct resistance per vehicle specifications
    Interpretation: Circuit inconsistencies confirm wiring or component faults.
  4. Test the injection pump metering control solenoid/actuator function
    Expected: Proper activation and signal response
    Interpretation: Failure or erratic response indicates a faulty metering control component.
  5. Verify the FRP sensor signal and compare against OEM specifications
    Expected: Consistent sensor output within range
    Interpretation: Out-of-range signal suggests sensor replacement is needed.
  6. Check and update PCM software or reflash calibration if available
    Expected: Corrected signal interpretation and no code recurrence
    Interpretation: Software-related issues may be resolved with updates.

Repair Solutions

Repair or replace damaged wiring and connectors medium
Estimated Cost: $50 - $300

Fixes intermittent signal issues by ensuring reliable electrical connections.

Replace the injection pump metering control solenoid/actuator hard
Estimated Cost: $400 - $1200

Required if internal pump control components fail electrical testing.

Replace the FRP sensor medium
Estimated Cost: $150 - $500

Often needed when sensor feedback is out of specification.

Update or replace PCM with correct calibration hard
Estimated Cost: $300 - $1500

Only after confirming no hardware faults; rare but may be required.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming a bad fuel injector when the issue is wiring or sensor-related
  • Replacing the injection pump without verifying electrical circuit integrity
  • Attributing P0260 to low fuel pressure without test confirmation

Frequently Asked Questions

Technical definition of P0260 OBD-II Code

The P0260 code stands for Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector). This generally indicates an issue with the Fuel System system.

Is it safe to drive with a P0260 code?

With a severity level of medium, intermittent engine performance issues, reduced power, possible stalling

Symptoms associated with DTC P0260

Drivers often report: Check Engine Light (CEL) illumination, Rough idle or engine misfire, Reduced engine power or hesitation when this code is present.

Common triggers for the P0260 error

It can be caused by several factors, most notably: Intermittent wiring/connectors damage in the injection pump metering control circuit, Faulty injection pump fuel metering control solenoid or actuator ("B" circuit), Faulty Fuel Rack Position (FRP) sensor or related sensor in the pump.

Repair cost breakdown for P0260

Repair costs depend on the specific failure. A simple Repair or replace damaged wiring and connectors replacement is relatively affordable ($50-$300), whereas a Update or replace PCM with correct calibration repair is more expensive, potentially reaching $1500.

Does code P0260 apply to Nissan vehicles?

P0260 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

User Comments (0)

Share your experience or ask a question about this code.

Be the first to share your experience with P0260!