P220a peugeot. OBD2 Diagnostic Trouble Code P220A means that NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1) has been detected. Same as Peugeot Partner and other euro 6 cars. Learn about NOx sensors, their role in The P220A diagnostic trouble code (DTC) indicates an issue with the NOx (nitrogen oxide) sensor supply voltage circuit for Bank 1 Sensor 1. Hiya have a peugot 208 hdi with fault code P220a-00 is this the Nox sensor engine management keeps coming on. Citroen/Peugeot P220A fault code repair Nox For a month or so I have been doing a mixture of long and short jouneys, then clearing the fault with the quick easy to use Elm diagnostics tool and carrying on until the next time and by The last two characters "0A" is DTC number. ?? Discover how to diagnose and fix common Peugeot and Citroen fault codes like P2200, P220A2, and U029D. Learn what NOx Sensor Supply Voltage Circuit Bank 1 Sensor 1 means, location and how to repair. 6 HDi Euro 6. Repair Information for P220A code. This sensor is responsible for monitoring the levels of In this guide, we’ll explore the ins and outs of the P220A code: what it signifies, its symptoms, potential causes, diagnostic steps, and how to Replacing the Nox sensor on 2017 Citroen Berlingo 1. Anyone any idea what could be causing this and how to fix it. After two days of running fine the engine light has come back on with fault codes P220a & U1535.