Mitsubishi produces some of the most popular 4WD and SUV models in Australia, including the Triton, Pajero, Outlander, and ASX. This guide covers the most common Mitsubishi-specific dashboard warning lights and how to diagnose them.
Check Engine Light
Common triggers on Mitsubishi vehicles include oxygen sensor faults, EGR system issues (particularly on the 4D56 and 4N15 diesel engines), catalytic converter efficiency codes, and EVAP leaks. On Mitsubishi models with the MIVEC variable valve timing system, cam timing solenoid faults can also trigger the light. Read codes with an OBD-II scanner and refer to your workshop manual’s diagnostic flowcharts.
Super Select 4WD Warning Lights
Mitsubishi Pajero and some Triton models use the Super Select 4WD system, which has its own set of warning indicators. The 4WD light flashing can indicate a transfer case shift fault, low transfer case fluid, or a position sensor issue. If the centre diff lock light flashes when it should be solid (or vice versa), the actuator or its wiring may be at fault. Your workshop manual includes the Super Select diagnostic procedure, including how to read 4WD-specific fault codes through the dedicated diagnostic connector.
ASC / TCL Warning Lights
Mitsubishi uses ASC (Active Stability Control) and TCL (Traction Control Logic). Like other makes, a permanently illuminated ASC or TCL light usually indicates a wheel speed sensor fault. On the Triton and Pajero Sport, corroded rear wheel speed sensor connectors are a common failure due to exposure. The workshop manual provides sensor resistance values and testing procedures.
DPF Warning (Diesel Models)
Mitsubishi diesel vehicles (Triton, Pajero Sport, Outlander PHEV diesel) have a DPF warning system. The first stage warning means the filter needs a highway drive to regenerate. If ignored, the second stage warning appears, requiring a dealer-level forced regeneration. The 4N15 engine in the current Triton is known for DPF issues when used primarily for short urban trips. A sustained 20 to 30 minute highway drive at 60 km/h or above will trigger regeneration in most cases.
CVT Temperature Warning
Mitsubishi models with CVT transmissions (Outlander, ASX, Lancer) can display a CVT temperature warning during heavy load driving. Pull over, let the transmission cool in Park at idle, and investigate if it recurs. Regular CVT fluid changes (Mitsubishi recommends every 75,000 km using their specific CVTF-J4 fluid) help prevent overheating issues.
Service Reminder Light
Mitsubishi models display a spanner icon or “SERVICE” message at preset intervals. This is a distance-based reminder, not a fault indicator. Your workshop manual includes the reset procedure, which typically involves a sequence of ignition key and trip meter button presses.
Diagnostic Resources
Mitsubishi vehicles use manufacturer-specific codes alongside standard OBD-II codes. The workshop manual is essential for interpreting these correctly. Browse our Mitsubishi workshop manual collection or search at mechanicmate.net/shop.
