P2073 Diagnostic Trouble Code

P2073 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 P2073 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code P2073 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 P2073.

Fortunately, P2073 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2073 Trouble Code For Specific Cars

P2073 Chevrolet Two-ten
P2073 Maserati 8 Transmission Fluid Pressure Sensor/Switch B Circuit
P2073 Lanchester 14 Speed Control Command Switch Out of Range High
P2073 Jaguar Xj-13 Seat Driver Front Up Switch Circuit Failure
P2073 Awz-zwickau P Aux Heater Overheat Sensor Circuit Open
P2073 Triumph Bonneville 1200 Passenger's Seat Forward Switch Circuit Short to Battery
P2073 Lada 2104 Shift Solenoid A Control Circuit Range/Performance