Powertrain, generic (extended)

P2A1A Injection Pump Fuel Metering Control E (Cam/Rotor/Injector)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2A1A covers fuel metering element E in general: the engine control module has seen a malfunction of that element but files it under none of the more specific codes for plausibility (P2A1B) or low and high signal (P2A1C, P2A1D). A fifth separately driven element is rare; it presupposes engines that meter fuel per cylinder or per pumping unit. Delphi's F2E heavy-duty system, used by Volvo, Renault Trucks and Hyundai on six-cylinder engines, pairs a common rail with six injectors, half of them pumping and half plain, and the 16 litre version uses six pumping injectors – a layout where letters up to F could be assigned. Whether any maker actually reports P2A1A is not published; the CARB monitoring rules remain the basis. Reduced power is the likely reaction.

Likely causes

Wiring or connector fault at metering element E
Metering element E or its solenoid defective
Control module fault

Symptoms

  • Check engine light on
  • Reduced power
  • Uneven idle

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–3,000
Time0.5–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

injection pump metering einjection pumpwiring harness

Related codes

P2A1BP2A1CP2A1DP2A16P2A1E

References: law.cornell.edu, merlindiesel.com, patents.google.com.