U0301 Mitsubishi Space Star Diagnostic Trouble Code
U0301 Mitsubishi Space Star code definition:
U0301 is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code for Mitsubishi Space Star.
U0301 Mitsubishi Space Star is a DTC or a diagnostic trouble code. It is a check engine light code which indicates that the catalyst's system efficiency is less than the required threshold. In simple terms, it means that more pollution is added into the air than what was supposed to be because of your car. The PCM then uses this data to provide the right strategies for the fuel delivery and ignition timing of the engine.
Symptoms
Symptoms of a U0301 Mitsubishi Space Star diagnostic trouble code may include:
- The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
- Faulty or damaged wiring
- Hesitation upon acceleration
- Diminished fuel efficiency
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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
- Fuel with a large percentage of sulfur will clog the DPF quickly
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Common Misdiagnoses
- TP Sensor Learn Not Complete Problem
- Low Coolant Circuit Problem
- Cruise Control System - Vehicle Accel Too High Problem
- TFP Valve Position Switch-Drive Without Drive Ratio Problem
- Problem
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.
You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.
Process Tips
Diagnostic trouble code U0301 Mitsubishi Space Star 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 U0301 Mitsubishi Space Star.
Fortunately, U0301 Mitsubishi Space Star is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.
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