Preconverter output temperature sensor operation check
- Make
- Fiat
- Model
- Croma Factory Service Manual
- Year
- 2005–2010
- Section
- Emission control system › Preconverter output temperature sensor operation check
PRECONVERTER OUTPUT TEMPERATURE SENSOR OPERATION CHECK
| STEP | CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Check whether error P2080 - Temperature sensor on preconverter output - is present using the diagnostic equipment | Replace the temperature sensor Op. 1080B64 CATALYTIC CONVERTER EXCESS TEMPERATURE THERMOCOUPLE - R + R |
| 2 | Turn the ignition key OFF. Disconnect the wiring harness connector from the upstream particulate filter temperature (DPF) Turn the ignition key ON. Check that the voltage across pin 1 and 2 of the sensor See K189 UPSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF) is greater than 4.8 V. Move on to Step 4 | Move on to Step 3 |
| 3 | If faults are found, restore the wiring between the engine control unit and the downstream temperature sensor See E5070 PARTICLE FILTER SYSTEM Replace the wiring if necessary. The test can be considered over | Replace the engine management control unit |
| 4 | Turn the ignition key OFF. Check that the resistance across pin 1 and 2 of the sensor See K189 UPSTREAM PARTICULATE FILTER TEMPERATURE SENSOR (DPF) is between 200 and 600 Ohm | Replace the temperature sensor Op. 1080B64 CATALYTIC CONVERTER EXCESS TEMPERATURE THERMOCOUPLE - R + R |
| 5 | Replace the engine management control unit |
Parts & tools for this job For 2005 Fiat Croma
- TOOLOBD2 scannerSearch: OBD2 scanner
- TOOLDigital multimeterSearch: automotive digital multimeter
- TOOLBack-probe test leadsSearch: back probe test leads
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.