P2A17Injection Pump Fuel Metering Control D Range/Performance (Cam/Rotor/Injector)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2A17 means fuel metering element D is not delivering what the control module commands, although its circuit shows no electrical fault. Volvo and Mack document the code for their 11 and 13 litre engines (including Mack MP7/MP8) built to the US17 emissions level, together with P0257 and P2A1F. These engines pressurise the common rail with three cam-driven pumping injectors, each riding a double lobe that strokes it twice per camshaft turn. One bulletin points to an assembled camshaft whose injector lobe can twist on the shaft; it usually slips by 60°, and around 15° is already enough to trigger the code and lose power. Another groups P2A17 with low rail pressure, leak and regulator learning codes and asks for Tech Tool 2.7.85 or later plus guided diagnostics.
- What you may notice
- Check engine light on
- Lack of power
- Further rail pressure codes stored at the same time
- Likely causes
- LikelyInjector lobe turned on the assembled camshaft (Volvo/Mack US17)
- PossibleRail pressure problem such as an internal leak or poor low-pressure supply
- PossibleWorn pumping injector or rocker of element D
- RareOutdated diagnostic software leading to wrong test results
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €8,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.