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- Service def system engine will not start driver#
- Service def system engine will not start full#
- Service def system engine will not start software#
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Service def system engine will not start software#
But it does nothing to punish the manufacturer if the system components or the software running the SCR system derates the engine for reasons other.
Service def system engine will not start driver#
The engine derate is a sort of punishment to the driver for his actions of tampering SCR system. The result is remarkable DEF breaks down NOx to H 2 O (water), CO 2 (Carbon Dioxide) and N 2 (Nitrogen). 2) Driver should not use poor quality DEF (water for example) based on some observations from Europe. The solution is injected in the stream of hot exhaust gases and is carried to the SCR catalyst, where it chemically reacts with its surface material and NOx.
Service def system engine will not start full#
If nothing happens after you turn the key:īad battery or terminals: Batteries have a finite lifespan, and terminals can loosen or corrode.īad starter: This should be obvious from the response to the key. DEF expands about 7 when frozen, meaning that it would be important if you're going to let it freeze not to have the tank full in order to reduce the risk of cracking the DEF tank. DEF is a solution (or mixture) of 32.5 Urea and 67.5 de-ionised water. No spark means no start.įaulty cam or crank sensor: If the sensors are faulty they will either provide no information to the ignition system, or will provide incorrect data. If these sensors are not operating properly, DTC P207F may be stored again in a short time. Moreover, continuing to crank the engine may bring the valves into contact with the piston, causing serious engine damage.īad ignition coil: Without a functional coil to step up the voltage, there can be no spark. Thus, the engine will not start.īad timing belt: If the timing belt stretches or breaks, the engine will not run. If the engine cranks, but the car doesn't start:īad fuel pump: A faulty fuel pump won't deliver fuel to the engine, even if you've just filled up.īad spark plugs: Without hot sparks to ignite the fuel charge in each cylinder, there is no combustion and no expansion of the burning mixture.