P2A1FInjection Pump Fuel Metering Control F 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
- P2A1F says that metering element F does not reach its target although its wiring checks out. Volvo and Mack document it for their US17-generation 11 and 13 litre engines, alongside P0257 and P2A17. On these engines three pumping injectors, driven through rockers by double cam lobes, deliver fuel into the rail at up to roughly 35,000 psi. Two causes are named in their bulletins: an injector lobe on the assembled camshaft that has turned on the shaft – checked by barring the engine over and watching each lobe – and genuine rail pressure problems listed together with leak and low-pressure supply codes. For the latter, Volvo requires current Premium Tech Tool software and the guided test. Expect lack of power; repairs range from software to a new camshaft.
- What you may notice
- Check engine light on
- Lack of power
- Rail pressure codes stored alongside
- Likely causes
- LikelyInjector lobe spun on the assembled camshaft (Volvo/Mack US17)
- PossibleLow-pressure supply too weak or a leak in the rail system
- PossibleWorn pumping injector of element F
- RareOutdated workshop software misleading the guided test
- 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.