P20BD points to an open circuit somewhere in the AdBlue heater control system, which means the ECU is sending a signal to the heater and getting nothing back. Not low voltage, not a weak signal, nothing at all. That’s the…
Here’s a scenario we hear almost weekly in the workshop. Someone brings their van or car in, visibly a bit exasperated, and says something like: “I’ve filled the tank twice this week, I’ve had someone check the sensor, and this…
If your AdBlue warning light has come back on even though the tank’s full, don’t rule out something a lot of drivers never think to check: the connector. Not the tank, not the pump, not even the injector, just the…
A Ford Transit AdBlue warning almost always traces back to one of three things: the dosing injector, the level or quality sensor, or a NOx sensor reading outside the range the ECU expects. Ford’s system is fairly unforgiving once a…
Your Citroën’s AdBlue warning light is the car telling you it can’t confirm its own exhaust cleaning is working. That’s a different thing from the tank running low, and it catches a lot of owners out. Underneath the warning is…
A Peugeot Partner AdBlue fault almost always comes down to a short list of parts: the NOx sensors, the AdBlue injector, the pump, the tank heater or the tank level sensor. Bad fluid, lots of short journeys and a tired…
Most Nissan AdBlue faults come down to one of three things: a failing NOx sensor, a blocked or crystallised dosing injector, or a level sensor giving the ECU a reading it can’t trust. On Nissan diesels specifically, the NOx sensor…
You have had the AdBlue warning cleared. The light went off. You drove away thinking it was sorted. Then three days later, sometimes less, the same warning is back on the dashboard. This is not a glitch. It is not…
If your dashboard lit up with an AdBlue malfunction warning the morning after a cold night, you’re not alone. This is one of the most common winter callouts we get across the UK, from Scotland down to the South East,…
