What Does P0260 Mean?
The ECM has detected an intermittent fault in the injection pump fuel metering control 'B' circuit related to the cam, rotor, or injector mechanism. This indicates the secondary diesel fuel metering control is experiencing sporadic signal interruptions or erratic operation. The intermittent nature typically points to a connection issue that manifests under vibration, thermal expansion, or specific operating conditions.
Common Causes
35%
Intermittent connection at the fuel metering solenoid B connector due to corrosion or loose pins
30%
Fuel metering control solenoid B with intermittent internal coil failure
20%
Chafed or intermittently grounding wire in the harness between ECM and solenoid
15%
ECM connector pin looseness or backout causing intermittent signal loss
Diagnostic Steps
1
Step 1: Perform a thorough wiggle test on the fuel metering solenoid B connector and wiring while monitoring the metering PID on the scan tool — watch for any signal dropout or erratic readings.
2
Step 2: Inspect the solenoid connector for signs of corrosion, moisture, bent pins, or damaged seals. Clean with contact cleaner, apply dielectric grease, and reconnect.
3
Step 3: Measure solenoid coil resistance while gently flexing the wiring and tapping the solenoid body — resistance should remain stable. Any fluctuation indicates an intermittent open.
4
Step 4: Inspect the wiring harness routing from ECM to injection pump for chafing, heat damage, or contact with moving engine components.
5
Step 5: If the intermittent fault cannot be reproduced, log freeze frame data conditions and set up continuous monitoring to capture the fault occurrence pattern.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The ECM has detected an intermittent fault in the injection pump fuel metering control 'B' circuit related to the cam, rotor, or injector mechanism. This indicates the secondary diesel fuel metering control is experiencing sporadic signal interruptions or erratic operation. The intermittent nature t...
The most common cause of P0260 (Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector)) is: Intermittent connection at the fuel metering solenoid B connector due to corrosion or loose pins
Typical repair costs for P0260 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience unpredictable power loss or stalling. Drivable with caution but the intermittent nature makes this fault unpredictable. Repair as soon as possible.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0260 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Diesel Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
