P2672 indicates that the engine control module has detected that the timing of the fuel injection pump is outside the calibrated range. This typically means the pump is not delivering fuel at the correct crankshaft angle.
The pump's internal timing mechanism (e.g., timing gear or cam) may have slipped or been set incorrectly during service.
Mechanical wear or damage to the gear or timing belt/chain that drives the pump can cause the timing to drift.
Improperly torqued or missing bolts can allow the pump to move, altering its timing relationship with the crankshaft.
Erroneous sensor signals can make the ECM think the pump timing is off when the pump itself is fine.
A rare cause; only consider after ruling out mechanical issues and sensor faults.
Resetting the code may turn off the light temporarily, but the underlying timing issue will cause the code to return. Proper diagnosis and repair are required.
In most cases the ECM is not the problem. Replacing the PCM is rarely necessary and is usually suggested only after all mechanical and sensor causes have been eliminated.
A clogged fuel filter can affect fuel delivery but does not directly alter pump timing, so it is not a common cause of this code.
No. P2672 pertains to fuel injection pump timing, not to emissions components such as the catalytic converter or oxygen sensors.