What Does P2673 Mean?
The Engine Control Module has not completed or stored the injection pump timing calibration learning procedure. This calibration is essential for precise fuel delivery on diesel engines. The code indicates the learning process was interrupted, failed, or was never performed after pump replacement or ECM installation.
Common Causes
40%
Injection pump timing relearn procedure not performed after pump or ECM replacement
25%
Faulty camshaft or crankshaft position sensor preventing calibration learning
20%
Injection pump timing mechanically out of range for calibration to complete
10%
Low battery voltage during learning procedure causing interruption
5%
ECM software issue or memory corruption
Diagnostic Steps
1
Step 1: Verify battery is fully charged (12.6V minimum) and charging system is functioning properly
2
Step 2: Check for any other DTCs, particularly timing sensor codes; repair all other faults first
3
Step 3: Verify injection pump mechanical timing is within specification using factory service procedure
4
Step 4: Ensure all system requirements are met (engine temperature, idle conditions) per calibration procedure
5
Step 5: Perform injection pump timing calibration learning procedure using factory scan tool or OEM-specific software
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The Engine Control Module has not completed or stored the injection pump timing calibration learning procedure. This calibration is essential for precise fuel delivery on diesel engines. The code indicates the learning process was interrupted, failed, or was never performed after pump replacement or...
The most common cause of P2673 (Injection Pump Timing Calibration Not Learned) is: Injection pump timing relearn procedure not performed after pump or ECM replacement
Typical repair costs for P2673 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine may run poorly with reduced power, hard starting, and excessive emissions. Safe to drive cautiously but should be calibrated soon to prevent improper fueling and potential engine damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2673 to identify the root cause.
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Quick Info
Category
Powertrain
System
Diesel Fuel Injection System
Difficulty
Type
Generic (SAE)
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