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Prev Professional Automotive Repair Technical Discussions for February 7, 2026
International Automotive Technicians' Network (iATN) - Members Only
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2012 Volkswagen Golf 2.5L MIL Lamp on VIN: WVWBB7AJ3C
Hi All. Car came in for its annual emissions test and the check engine light was on. P0491-Secondary AIR injection insufficient Flow. Checked AIR pump and inspected line between pump and AIR solenoid valve. No problems. Checked AIR solenoid valve and found... Trouble codes: P0491
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