P2620 Diagnostic Trouble Code

P2620 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P2620 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code P2620 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P2620.

Fortunately, P2620 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2620 Trouble Code For Specific Cars

P2620 Mitsubishi 360 Audio Bezel is Not Responding
P2620 Frazer Nash Sebring NVM Alarm Data Failure
P2620 Toyota Pod Panel Dim Switch Circuit Open
P2620 Tucker 48 Pedal Forward / Rearward Potentiometer Feedback Circuit Failure
P2620 Renault Etoile Gear Shift Reverse Actuator Circuit Range/Performance
P2620 Citroen Ds4 Fuel Level Sensor B Circuit Malfunction
P2620 Honda Pilot Ii Rear Doppler Sensor Circuit Failure