What Does P0466 Mean? The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. When you see P0466 engine fault code on your engine code reader this description will help you. engine code P0466P0466 fixobd P0466dtc P0466obd code P0466obd2 P0466P0466 car codediagnostic code P0466car code P0466check engine code P0466fehlercode P0466P0466 fiatcodigo P0466codigo falla P0466P0466 kody b??dówcodigo de falla P0466 What are the common causes of P0466 ? These may include a faulty or improperly installed fuel cap, a faulty purge control solenoid, clogged or broken charcoal canister, broken or cracked vacuum or fuel vapor hoses, a faulty pressure or flow sensor, or a bad PCM. PCM failure is rare. How do you troubleshoot P0466 ? Tightening fuel cap Replacing the fuel cap Replacing vacuum lines or vapor lines Replacing charcoal canister Replacing charcoal canister purge valve and/or solenoid Searches related to P0466 - Purge Flow Sensor Circuit Range/Performance p0466 gmc p0466 chevy tahoe p0466 jeep po466 engine code p0466 ford p0446 code chevy p0446 evaporative emission control system vent control circuit malfunction how to fix po446