my O2, Fuel Empty, Brake & battery lights are all on. The fuel is full and the car seems to be running fine. What is my problem?

Asked by May 30, 2014 at 10:32 PM about the 1994 Isuzu Trooper 4 Dr LS 4WD SUV

Question type: Maintenance & Repair

2 Answers

78,535

easy stuff first, check brake fluid level, check battery voltage, now a little harder, test alternator output and diode pattern, right there is usually where the problem is, a diode goes faulty and causes a feedback turning on all those warning lights.

1 out of 1 people think this is helpful.
175

Disconnect the neg. battery cable. Then reconnect.... That should reset your codes. Like a computer reboot.

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