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42 = Automatic shutdown relay circuit open or shorted
Fuel pump relay control circuit
No auto shutdown relay output voltage sensed by the computer
Fuel level unit - no change over miles or voltage incorrect
When the crank sensor fails, the engine will die but no code is set. Code 11 will only set if the computer has never seen a pulse from the crankshaft rotation sensor. If the engine has been running in the past, this code will not be set because the computer remembers that the sensor was working. To check for this fault, the computer memory must be erased.
When you have a no-start condition, disconnect the battery for about 15 seconds. Reconnect and crank the engine for 7 seconds. Now pull the codes again. If you get a code 11, it means that the crank Hall Effects sensor or its associated wiring is defective. To determine whether the sensor is bad or the wiring is bad: