Trouble code P0703 means: Torque converter/brake switch B, circuit malfunction
Trouble code P0420 means:Catalyst system efficiency below threshold
8th digit of your vin code denotes engine
Code 37 is for a malfunction in the torque converter clutch circuit.
Code 17 is engine cold too long. The normal cause is a failed thermostat.
After reading the code, and repairing the codes, you reset code with a scan tool.
Trouble code P0171 means:System too lean (Bank 1)
Engine thermostat malfunction
ambient/battery temp sensor hi
Code 7 2 is catalytic converter efficiency below required level
MIL Code 11 = No crank reference signal detected during engine cranking. Good luck!
Check Engine code of P0404 (EGR)
An "H" engine code in the fifth position of the VIN designates a 340ci or 360ci engine. Other engine codes are "B" (198ci), "C"(225ci) or "G"(318ci).