What does the OBD code p0481 mean?
It is often associated with the P0480 code. What the P0481 code means. P0481 is the OBD-II generic code for a problem with the control circuit for cooling fan 2. The cooling fan should be commanded on under certain conditions where the engine requires more cooling, and this is controlled via the cooling fan relay.
What is the p0481 code for cooling fan 2?
P0481 code definition. The P0481 code identifies a problem with the control circuit for cooling fan 2. It is often associated with the P0480 code.
What does p0404 mean on an EGR sensor?
Often times code P0404 does not actually indicate that there is something wrong with the EGR valve itself, but actually that the EGR sensor is telling your PCM that the proper amount of EGR needed to flow back into your cylinders and cool them is not present.
Why is my OBD code p0400 not working?
The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set. No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp).
What does the p0480 code on my car mean?
What the P0480 code means. P0480 means that the cooling fan 1 control circuit has a malfunction. The vehicles ECU has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. The ECU then triggers a Check Engine Light to illuminate on the dashboard.
What is the diagnostic code for p0408 OBD-II?
P0408 OBD-II Trouble Code: Exhaust Gas Recirculation Sensor B Circuit High. Cost of diagnosing the P0408 code. P0408 is a diagnostic trouble code (DTC) for “Exhaust Gas Recirculation Sensor B Circuit High”.
How does the p0480 cooling fan relay work?
The PCM (powertrain control module) senses the increase in engine temperature through the CTS (coolant temperature sensor) located near the thermostat. When the temperature reaches about 223-degrees F (value depends on make/model/engine), the PCM will command the cooling fan relay to turn on the fan.
Where is the p0408 code stored in the PCM?
The P0408 code is stored when the PCM detects an issue with the EGR (exhaust gas recirculation) system. After one or more (depending on the vehicle manufacturer’s specifications) instances of this, the code will be stored, and the Check Engine Light will illuminate.