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

P0260 reports brief dropouts or jumps in the circuit of fuel metering actuator B on a diesel injection pump that do not last long enough for the low or high code (P0258/P0259) – typically a loose contact or a wire breaking under vibration. No manufacturer using P0260 was found; the description follows CARB's continuous circuit monitoring requirement and Saab's diagnosis of the same two-valve pump, which recommends a wiggle test with the valves activated.

Medium severity. Can I keep driving?Drive as little as possible and go to a repair shop. If you smell fuel or the engine is shaking badly, do not keep driving.

Symptoms

Check engine light on
Occasional jerking or brief loss of power
Limp mode possible

Most likely causes

Loose contact or corrosion at the metering valve B connector
Broken or chafed wire in the harness to the pump (vibration, heat)
Metering valve B with internal dropouts
Unstable supply or ground

What to check, in order

Start with the simplest. You can tick off each step.

Check the connector and wiring of the injector indicated
Gently move the wiring with the engine running and watch whether the reading changes.
Measure the resistance and compare it with the manufacturer's specification
Check the control signal with an oscilloscope; on direct injection or diesel engines, leave this to a repair shop because of the high voltages
On diesels, check the per-cylinder injection corrections

Good to know

Repair difficulty: hard
It can trigger limp mode.
It affects emissions.

What each character of P0260 means

P: Powertrain: engine and transmission
0: Generic code: same on every make
2: Fuel injection
60: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0260?

Drive as little as possible and go to a repair shop. If you smell fuel or the engine is shaking badly, do not keep driving.

What causes code P0260?

The most common causes are: loose contact or corrosion at the metering valve B connector; broken or chafed wire in the harness to the pump (vibration, heat); metering valve B with internal dropouts.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.