Powertrain, generic (extended)

P2A15 Injection Pump Fuel Metering Control C High (Cam/Rotor/Injector)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P2A15 the engine control module finds the circuit of metering element C reading too high: voltage where the driver expects a pulled-down line, or a current beyond the limit. Causes are a chafed wire touching battery voltage, a short between windings inside the actuator, or a failing output stage. Element C is the third metering element on engines that control several pump plungers, valves or unit injectors individually. P2A15 has no public manufacturer documentation. Saab's V6 diesel of 2002, whose pump carries two pressure valves, logs an internal valve short after 2.1 s and then caps pedal travel at 30 %, fuel at 20 mm³ per stroke and rail pressure at 60 MPa – an example of how strongly such a fault restricts the engine. P2A14 is the low-side fault.

Likely causes

Shorted turns in the coil of metering element C drawing excess current
Control wire of element C shorted to battery voltage
Output stage in the engine control module no longer switching correctly

Symptoms

  • Check engine light on
  • Strongly limited power and accelerator response
  • Engine may stall or refuse to start

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–2,000
Time0.5–5 h

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

Parts involved

injection pump metering cinjection pumpwiring harness

Related codes

P2A12P2A13P2A14P2A19P0259

References: law.cornell.edu, saabwisonline.com, saabwisonline.com.