Make sure engine is cold (hasn’t been driven).I started searching and finally found a driving cycle that worked, and got it ready in a very short period of time. Unfortunately, I couldn’t get the ‘X’ to go away next to ‘CAT’ and make the vehicle ready. I was told that I would have to drive the vehicle for quite a distance to get it to show that it was ready to be tested. This indicates that the Ranger is not ready to be tested. Looking at the scan tool above, you’ll see a red X next to ‘CAT’ (Catalyst Monitors). As each system completes its own self test, the monitor will set back to Ready. This drive cycle relearns the OBDII system and rechecks all of the emissions component’s individual systems. In order to get the monitors set back to Ready, the vehicle must be driven through a drive cycle, which is a combination of city/highway driving for a set period of time. These non-continuous monitors are considered Ready until either DTC’s have been cleared with a scan tool or if battery power has been disconnected, then the monitors will reset back to Not Ready. These monitors are like self checks of each emissions component (EGR, O2 sensor, etc) within the OBDII system. If the OBDII system is operating properly, the MIL command status will be OFF.Ĭheck 3 – OBDII (Non -Continuous) Readiness Monitors check. If the MIL command status is ON with a DTC set, the vehicle will fail. For example, an engine misfire DTC – PO301. If the light is not working, the vehicle will FAIL the test, because the purpose of the light is to alert the driver of the vehicle that there is a problem with the OBDII system (exceeding emissions) and the vehicle needs to be diagnosed and repaired.Ĭheck 2 – MIL Command Status and Diagnostic Trouble Codes (DTC’s) check If the MIL command status is ON, then the vehicle’s Powertrain Control Module (PCM) is commanding the MIL to turn ON, because a problem has been detected within the OBDII system and a DTC has been set. The inspector answers these two bulb check questions as either a PASS or FAIL. The light must come on when the ignition is turned to the ON position and the light must go OFF when the engine is started. The On-Board Diagnostics (OBDII) Emissions TestĬheck 1 – Malfunction Indicator Lamp (MIL) or Service Engine Soon Light, Check Engine Light, Check Engine Symbol check This is considered the bulb check portion of the test. P0401 Exhaust Gas Recirculation Flow – Insufficient Detected.P0155 O2 Sensor Heater Circuit Bank 2 Sensor 1. P1443 Evap Emission CTRL System CTRL Valve.That would be an instant fail.Īfter fixing the bulb, I scanned the Ranger and found (3) codes that needed fixed: My check engine light bulb was burned out. Fixing Codes & Getting The Ranger Ready For Testing These Catalyst Monitors are non-continuous monitors that assess the ability of the catalytic converter to decrease harmful emissions. Now that I live in Texas, they have a test that plugs in to the port under your dash like a scan tool, and checks to determine whether the emissions system and its related components are working properly. When I lived in Ohio, we didn’t have any type of mandatory emission test or inspection in order to get/renew license plates in the county I lived in.
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