Check Engine Light (CEL),yet no codes

ford
mustang

#1

I have an 06 Mustang GT with a few minor mods. One of them being an intake and a tune. Every once in a while I will get a CEL. When I plug in my handheld tuner to read the trouble codes, no codes are found.


#2

Does the tuner have the capabilty to check for pending codes? If not, take the vehicle to a local Auto Zone and ask if they can connect a code reader to see if there are any pending codes. They’ll do this for free.

Tester


#3

It can check for P codes.


#4

Is your scanner CAN compatible? Not all OBD2 scanners will work on all OBD2 cars.


#5

The “P” in P codes does not stand for pending, it stands for Power-train.


#6

CAN compatible? The hand held tuner does scan for P or powertrain codes. I have had P0171 code (too lean) bank one and P0430 and P0431 come up before. I replaced my 02 sensors and cleaned my MAF sensor and those codes have not shown up. Also the hand held tuner/scanner is compatible and is locked to my car. I use the tuner to load email performance tunes into the car.