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Hi, I have a 142 audi A7. Recent got ad blue maintenance alarm followed with engine check light. Fault occurred 200km after topping up ad blue. Error codes were P20FE00 (reductant metering system, fault function) and p20E800 (reductant, pressure too low). 850km left until car will not restart. I have since noticed a crystallised ad blue build up on the ground under the engine bay. Appears to be a leak at the ad blue injector unit into the DPF. Has anybody else had these error codes, followed by a leak at the injectors/supply connectors? And if so, what was the solution?
145k on the clock and I noticed Audi had replaced the ad blue pump at 65k, similar alerts reported. Not sure if that has relation or not.
Thanks in advance for to anybody who can share.
Ad blue leak @ injector to DPF
The extended warranty was part of the emissions tampering that Audi/VW was doing on the TDI models. I don't think it is related to the ownership trail.
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Ad Blue system fault with engine check light
