DTC P2444 SECONDARY AIR INJECTION SYSTEM PUMP STUCK ON

OUTLINE OF DIAGNOSIS

• Detect the malfunction (always ON) of secondary air pump.

• Judge NG when the secondary air supply pipe pressure is higher than atmospheric pressure.

DTC P2431 SECONDARY AIR INJECTION SYSTEM AIR FLOW / PRESSURE SENSOR CIRCUIT RANGE / PERFORMANCE

OUTLINE OF DIAGNOSIS

• Detect the malfunction of secondary air pressure sensor output property.

• Judge NG when the secondary air pressure sensor output is largely different from the intake manifold pressure at engine starting.

DTC P2433 SECONDARY AIR INJECTION SYSTEM AIR FLOW / PRESSURE SENSOR CIRCUIT HIGH

OUTLINE OF DIAGNOSIS

• Judge NG when out of the standard value.

Definitely seems like your left combi valve (which contains the pressure sensor) is suspect. And yes, the cruise is disabled when your CEL is on.

The secondary air injection system isn’t even a necessity part. I have mine tuned out in my car and my girlfriends is broken so she had a engine light on but I don’t even bother to fix it because it’s sole purpose is to make the cars pass emissions whoever the cats are still cold. Other than that it does absolutely nothing.