I read all the answers on this topic. I am struggling with the same (I think) problem. The car enters emergency mode but at high speed and high engine revs. With normal driving, there is no chance of p0093 error. The only symptom that something is wrong is jumping rpm's (not always) which can lead to the engine off. The overflow test showed that injector 2 gives up too much fuel. This injector was replaced as first. It turned out that mine has a cracked atomizer, visible in the photo. Result after replacement? Nothing at all. The true is that I have no space to accelerate the car so that it shows p0093, but when stationary, the engine rpm is still jumping. The overflow test also showed that the injector No. 3 does not give off fuel completely (as if it all went to the cylinder). For the peace of mind, I also replaced the SCV pressure valve Couse it's cheap. For even more peace of mind car been running only on Liqui Molly diesel injector cleaner for 2h. In short circuit. Result on picture. I'm slowly losing my patient..
