P2A16Injection Pump Fuel Metering Control D (Cam/Rotor/Injector)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2A16 is the umbrella code for fuel metering element D, used when the control module registers a malfunction of that element without assigning it to the more specific plausibility, low or high codes (P2A17–P2A19). The D series only makes sense on systems with at least four individually controlled metering elements, such as engines whose camshaft drives several pumping units. On Volvo and Mack 11 and 13 litre truck engines from model year 2018, three of the six injectors are cam-actuated pumping injectors feeding the common rail; Volvo bulletins refer to D, though only with P2A17, not P2A16. A public description of P2A16 itself is missing, so the general CARB circuit and fuel system rules apply. Expect reduced power and a stored code with freeze frame.
- What you may notice
- Check engine light on
- Reduced power
- Hard starting or uneven running
- Likely causes
- LikelyWiring or connector fault in the circuit of element D
- PossibleMetering element D (valve, pumping unit or injector solenoid) defective
- RareEngine control module fault or software error
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.