P03A3 Subaru Impreza 3 OBD Code

OBD/2 P03A3 error code description and symptoms.

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P03A3, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P03A3 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

P03A3 Subaru Impreza 3 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P03A3 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If lack of ho2s switch - sensor indicates lean so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the lack of ho2s switch - sensor indicates lean.

Common Causes of Subaru Impreza 3 P03A3 OBD2 Code

A common cause of code P03A3 is the failure of Lack Of HO2S Switch - Sensor Indicates Lean, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Faulty TCM or TCM programming
Erratic camshaft position due to low oil pressure
Faulty select solenoid

P03A3 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P03A3 Subaru Impreza 3 OBD Code

P03A3 Subaru Impreza 3 Error Code Repair Process :

Common Causes of Subaru Impreza 3 P03A3 OBD2 Code

P03A3 code for other Subaru cars