Five problems related to emission control have been reported for the 1998 Toyota Camry. The most recently reported issues are listed below.
The check engine light was intermittent, and the emission valve(s) needed to be replaced. Mr scc.
A/f sensor failed. Yh.
Oxygen sensor failure caused check engine light comes on and off sometimes it stays longer. Yh.
Replaced air fuel sensor and oxygen sensor twice.
Charcoal cannister for smog controkl failed,cause engine light to illiminate. Yh.