P20A6 Diagnostic Trouble Code

P20A6 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 P20A6 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
Some aftermarket accessories and performance modifications

Repair Processes :

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. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code P20A6 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 P20A6.

Fortunately, P20A6 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P20A6 Trouble Code For Specific Cars

P20A6 Lexus Is220 TCM Power Relay Sense Circuit
P20A6 Mercedes S 420 Air Assist Control Valve Range/Performance
P20A6 Isdera 033 SCP (J1850) Invalid or Missing Data for Odometer
P20A6 Maserati Quatroporte Transmission Fluid Temperature Sensor Circuit High Input
P20A6 Morris Cowley Brake Pedal Input Circuit Ground Short
P20A6 Plymouth Superbird Exhaust Gas Recirculation Circuit Malfunction
P20A6 Monica 590 Battery Module Voltage Out Of Range