This code is most common on Peugeot models equipped with BlueHDi engines (Euro 6 emissions standards), including the:
: Use a diagnostic tool to monitor live data for the throttle position and manifold pressure to see where the values diverge. p306d peugeot fixed
Owners often find that the error is intermittent. It might trigger at (around 800 rpm) or in heavy traffic, where the car expects one air pressure (e.g., 960 mbar) but detects another (e.g., 990–1000 mbar). Strangely, driving at high motorway speeds can sometimes make the error "disappear" for hundreds of miles because the throttle remains open and stable. The Fixing Journey This code is most common on Peugeot models