This is regarding a Avensis 2.0 d4d 2011. 180k.
P062D code appeared with engine knocking.
I have found a TSB with this code thanks to @DevonAygo
Subject: Loss of engine power and MIL ON due to fuel injector failure - DTC P062D MIL ON
Models: AURIS; AVENSIS; COROLLA; RAV4; TOYOTA RAV4; VERSO
Model codes: ADE150; ADE157; ADE186; ADT270; ADT271; ADE150; ALA40; ALA41; ALA49; ALA30; ALA35; AUR20; AUR21
DESCRIPTION OF PHENOMENON Some customers may complain about injector failure causing a loss of engine power and MIL ON. DTC P062D (fuel injector driver circuit performance) is stored in the memory of the engine ECU.
PRODUCTION CHANGE The production process of the fuel injectors has been improved.
Injector feed backs need to be monitored via diagnostic PC if feedback volume of 1 or more injector is greater than +/- 3.0mm replace faulty injector/s with modified injector, if feedback of all injectors are < 3.0 mm Replace ALL injectors with modified injector
Number one was replaced with a brand new denso one but after a few days the fault returned.
All injectors have been removed and tested by a diesel company and dpf checked by dpf specialist.
So after it being in local garages, it went into Toyota yesterday who have advised to replace other 3. Its the first time I have had to replace all 4. How have all 4 injectors gone at the same time plus how can a diesel company who have bench tested them say they are fine but Toyota say to replace. I am desperate to get car back on the road as its a Taxi.
Toyota have advised once all injectors are in you have to code them in and then learn them the new values.
So another 3 will be going in followed by coding them in and learning them the new values.
Weird thing is. Car is fine when cold as soon as it warms starts shotting smoke out and knocking.
Toyota advised the inlet mannifold is coked up too. So that will be cleaned.
Will update this thread to help others in future.