Checking Exhaust Gas Sensor (720) Truck

ENGINE MAINTENANCE

Checking Exhaust Gas Sensor (720)



REPLACEMENT OF EXHAUST GAS SENSOR

[U.S.A. models]

Non-California model
50,000 miles (80,000 km)
100,000 miles (160,000 km)


California model
30,000 miles (48,000 km)
60,000 miles (96,000 km)
90,000 miles (144,000 km)





Exhaust gas sensor should be replaced after above miles operation. After vehicle has been operated for above miles, exhaust gas sensor warning lamp will come on to indicate that sensor should be replaced.





For non-California model

After replacement, disconnect warning lamp harness connector so that warning lamp will not come on thereafter.





For California model

After replacement, reset warning lamp hold relay so that warning lamp will come on after the next 30,000 miles (48,000 km). After the third replacement, disconnect warning lamp harness connector so that warning lamp will not come on thereafter.

After each replacement, check operation of exhaust gas sensor.