Hyundai Equus: Fuel Pressure Regulator – Diagnosis & Cost

One of the most common issues with any vehicle, including the Hyundai Equus, is when it has fuel pressure regulator issues. A bad fuel pressure regulator can cause all sorts of problems. Most modern vehicles have the fuel pressure regulator mounted on the fuel rail. Some may be in the fuel pump assembly, but this … Read moreHyundai Equus: Fuel Pressure Regulator – Diagnosis & Cost

Hyundai Equus: Flashing Check Engine Light Diagnosis

A flashing check engine light is your Hyundai Equus’s way of saying “I have a serious problem, don’t ignore me”. Most of the time, that serious problem is a misfire.  This flashing light should not be ignored.  When your engine is misfiring, it is dumping raw fuel into the exhaust.  This raw fuel can detonate, … Read moreHyundai Equus: Flashing Check Engine Light Diagnosis

Hyundai Equus: Warm Up Catalyst Efficiency → Below Threshold (Bank2)

P0431 is a standard OBDII trouble code, which means that it has the same meaning for the Hyundai Equus as it would any other vehicle.  It is closely related to P0430 (which is one of the most popular OBDII codes). Warm Up Catalyst Efficiency → Below Threshold (Bank 2) When it’s the only trouble code … Read moreHyundai Equus: Warm Up Catalyst Efficiency → Below Threshold (Bank2)

Hyundai Equus: Warm Up Catalyst Efficiency → Below Threshold (Bank 1)

P0421 is a generic OBDII trouble code.  It has the same meaning for the Hyundai Equus as it would any other vehicle.  It is closely related to P0420 (which is the most popular OBD code). Warm Up Catalyst Efficiency → Below Threshold (Bank 1) When it’s the only trouble code present, P0421 will typically not … Read moreHyundai Equus: Warm Up Catalyst Efficiency → Below Threshold (Bank 1)