Defeat OBDII Failures Unraveling the Enigma of CAN Safety Tests

" The Vehicle Inspection Report from the test equipment will identify monitors that are not ready. ... can detect any emissions failures. Your vehicle's ... The fault could be caused by something else in the systems that the sensor is monitoring. For example, oxygen sensor lean or rich faults are ... This reference information provides both a summary of pass/fail standards for the On-Board Diagnostic (OBD) test portion of a Smog Check inspection and ... Understanding OBDII Failures. 1. Reasons Your Vehicle May Have Failed The OBDII Test. Catalytic Converter failure,. Faulty gas cap,. Fuel ... This will cause the vehicle to fail the emission test right then and there. It's best to repair the vehicle so the code doesn't return. Tester. If the ECU commands the check engine light to illuminate, there will always be at least one P0 code stored. However, sometimes there are “pending codes”, which ... Vehicles that fail due to non-communication fail because the vehicle's onboard computer did not send a signal to the emissions testing equipment. Occasionally, ... The obd2 port wears out, easiest is to buy a pig tail replacement and remove the old one and wire up the new one. This might be as simple as a bad wire at the back of the connector which is shorting to another. Take a flashlight and carefully look at the ... In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that may increase the vehicle tailpipe ...