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Home >> Plymouth >> 1987 >> Voyager LE, 2.2 C, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 2.5L EFC System >> Diagnosis & Testing >> Fault Codes >> Code 51
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Code 51

Problem with oxygen feedback system. Occurs if O2 sensor indicates a lean condition for more than 12 minutes. Engine Running Test Mode 0-1 switching.