P2143

DTC P2143, sometimes indicated as P214300 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing exhaust gas recirculation vent control circuit/open.

The exhaust gas recirculation (EGR) system helps to reduce emissions by recirculating a portion of the exhaust gas back into the engine. The EGR vent control circuit is responsible for controlling the flow of exhaust gas to the EGR valve. If this circuit is open, the EGR valve will not be able to control the amount of exhaust gas that is recirculated. This can cause the engine to run too rich or too lean, which can result in a variety of problems.
There are a few things that can cause the EGR vent control circuit to open, such as a bad EGR valve, a sticking EGR valve, a clogged EGR valve, a bad EGR solenoid, a bad EGR vacuum switch, or a bad EGR valve position sensor. If you suspect that one of these components is causing the problem, you should test it to see if it is bad. If it is bad, replace it.

• P2143: Gas Recirculation Vent Control Circuit/Open
• P2143: Exhaust Gas Recirculation Vent Control Circuit/Open
• P2143: Exhaust gas recirculation (EGR) vent control – open circuit
• P2143 00: Exhaust gas recirculation (EGR) vent control - open circuit