Technical Punto 1.2l Petrol 2016 in Limp Mode

[123Thomas]

How do I know the car was in Limp Mode? After warm up it triggered a check engine light, stayed at 1500 rpm and displayed a message that the ESC, Hill Assist and TPMS are unavailable. Code reader gave a P0101 OBD II code. A P0101 is a Mass Air Flow (MAF) Circuit/Performance Malfunction code. But the Punto has a MAP sensor!
First clue: The "Limp Mode" started with a warm, not hot engine and the only thing I remembered was the EGR circuit starting at about 65 degrees Celsius. Reset Fault Code, removed connector to the "Purge Valve" and there was no limp mode triggered. Code reader gave a P0443 "Evaporative Emission Control System Purge Control Valve Circuit Malfunction" as expected, but no limp mode.
Changed purge control valve, reset code P0443 and problem was solved. No codes, no limp mode and after a drive cycle, all readiness codes ready.
Hope it will help someone.

 

[123Thomas]

Drive cycle to complete readiness states: It took a while, because I couldn't complete the EGR readiness state. It was still incomplete after about 200 km and a week of driving.

The last thing missing, to end the drive cycle positively, was that the engine only had to idle for more than 3 minutes (without stepping on the gas pedal) after a cold start and the EGR readiness state changed immediately to complete.

How easy, if you know how to do it.