P0468

DTC P0468, sometimes indicated as P046800 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the auxiliary emissions system causing purge flow sensor circuit high input.

The DTC P0468 code is set when the purge flow sensor input voltage is high. This may be caused by a faulty purge flow sensor, a wiring issue, or a problem with the ECM.
If you are experiencing this code, first check the purge flow sensor for damage or debris. If it is clean and undamaged, check the wiring for any signs of damage or shorting. If the wiring is okay, then the ECM may be at fault.

• P0468: Purge Flow Sensor Circuit High Input
• P0468: EVAP Purge Flow Sensor Circuit High
• P0468: EVAP Emission Purge Flow Sensor Circuit High Input
• P0468: Evaporative emission (EVAP) canister purge flow sensor – high input
• P0468 00: Evaporative emission (EVAP) canister purge flow sensor - high input
• P0468 00: Flow sensor: purge flow rate - short to plus