Mazdaspeed6 L4-2.3L Turbo (2006)
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Rear HO2S terminal D and PCM terminal 4Z
Short circuit
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If there is no continuity, there is a short circuit. Repair or replace the wiring harness. Rear
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Rear HO2S terminal C and body ground
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Rear HO2S terminal D and power supply
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Rear HO2S terminal D and body ground