Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2009LANCER L4-2.4L (4B12)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINS
2009 Mitsubishi Lancer L4-2.4L (4B12)
Powertrain Management: Technical Service Bulletins
2009 Mitsubishi Lancer L4-2.4L (4B12)SECTION Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Engine Controls - MIL ON, DTC P0420 Set
- Interior - Avoiding Floor Mat/Pedal Entrapment/Interference
- Computers/Controls - Revised DTC U1515 And U1570 Svc.
- Engine - MIL ON/DTC's P0061A/P0068/P1235/P1241
- Engine Controls - Revised Misfire DTC Information
- A/T Controls - Corrected CVT-ECU Terminal Voltage Chart
- Engine Controls - Revised ECM Output Voltage
- Engine Controls - DTC P2252/P2253 Diagnostics
- Emissions - CARB Environmental Performance Label
- Engine Controls - Revised Camshaft Position Sensor Data
- Engine Controls - Revised VIN Writing & Variant Coding
- Engine Controls - No Start/Hard Start Condition
- Fuel System - Revised Fuel Injector Assembly
- Fuel System - Revised Rear Injector Protector Fasteners
- A/T - Trans. Fluid Temp. Warning Lamp Diagnostics
- A/T - Data Reference List Corrections
- Fuel System - Revised Fuel Pressure Testing
- Starting Sys. - Revised Ignition Lock Knob Availability
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.