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Home >> Plymouth >> 1985 >> Horizon Base, 2.2 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 1.6 & 2.2L Feedback Carburetor System >> Testing >> Test 17 - Checking Computer Controlled Components >> Test Code 91

Test Code 91

Should hear oxygen solenoid clicking. If oxygen solenoid is clicking, press and hold ATM button until the next test code appears. If oxygen solenoid does not click, replace unit.

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