Black smoke / black spark plugs / high fuel consumption
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TPS (THROTTLE POSITION SENSOR) PROBLEM
If the TPS values are between 0.3 V (throttle closed) and 4.7 V (Wide Open Throttle) but the sensor is not working
properly, resulting in an incorrect fuel/air mixture.
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INLET AIR TEMPERATURE SENSOR (ATS) PROBLEM
If the ATS values are reading between -20°C and +80°C the check light will not come up. However, if the sensor is not
working properly (reading an incorrect temperature) the fuel/air mixture will not be correct.
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OIL TEMPERATURE SENSOR (OTS) PROBLEM
If the OTS values are reading between -30°C and +140°C the check light will not come up. However, if the sensor is not
working properly (reading an incorrect temperature) the fuel/air mixture will not be correct.
DOES THE ULP CHECK LIGHT COMES UP ?
If yes, find out with ULRead which sensor is causing it. Check connections.
Identify and replace the sensor/connector or repair/replace loom if damaged. Test again.
If not, continue below for ‘sensor faults that may not cause a ULP check light’
