P0894 Diagnostic Trouble Code

P0894 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 P0894 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
Malfunction Indicator Lamp (MIL) illuminated

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.
Faulty IMRC actuator/sensor

Repair Processes :

Now, clear the codes and test-drive the vehicle to see if the code is reset. 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. 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.

Process Tips

Diagnostic trouble code P0894 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 P0894.

Fortunately, P0894 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0894 Trouble Code For Specific Cars

P0894 Opel Signum Door Driver Key Cylinder Switch Failure
P0894 Chrysler Dart EPC Malfunction
P0894 Suzuki Lj 50 Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Ground
P0894 Lon Boll Double Berline Timing Reference High Resolution Signal B Too Many Pulses
P0894 Gaz 36 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0894 Simca 1301 Intake Manifold Runner Control (Stuck Open)
P0894 Volvo 460