Trouble code P0751 means: Shift solenoid A,performance problem or stuck in Off position
That is an open question. What part of the OBD system are you looking at?
a check engine light.means that something is wrong with your engine.what you have to do is get a code from your cars computer.using a obd 2 scanner.your obd 2 port is locate it right in front of your shifter.
Buy a Volo OBD performance chip
OBD = On Board Diagnostics.
What does obd code P0740 mean
You need an OBD scanner or take it to your local Auto Parts store. Stores like Advance auto parts can usually read codes for you. The generic codes they read out can be converted to Volvo's OBD codes. The generic codes usually start with the letter P.
P1442 Evap System Purge Valve Blocked Fault
Obd - 1
I'm not sure what you're asking, but if you mean that you are getting an OBD-II diagnostic code of P0128 from your Volvo S40, that code corresponds to a problem with coolant temperature. On a first generation Volvo s40 (99-04), this usually means that the thermostat or electronic coolant temperature sensor are malfuctioning or have failed.
OBD II codes regarding emissions component failure on Volvo V70 can involve multiple systems. The first step should be identifying the exact service error codes from the vehicles OBD port. Emission service codes can come from catalytic converter low efficiency, failed oxygen sensors, bad EGRs, ignition misfires, and faulty evaporative system parts.
It is 0BD2 system
P0118 is an OBD II (on board diagnostic) generic code. It's explained as : P0118 - Engine Coolant Temperature Circuit, High Input.