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Code 21
ALL OTHER MAKES OBD1 CODES CODE 21
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Found 1 result
1991 4 Runner V6 3.0 Code 21 O2Sensor
I've Had Problems With Valves Burning On This Engine In The Past. It Has 215,000 Miles And Recent Valve Job (15k Ago). Getting A Code 21...
Asked by
Jerry Joe
·
2 ANSWERS
1991
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