How is the Turbo bypass cutoff valve related to the secondary air injection system? Why would a failed Turbo bypass valve throw a p0411 trouble code? Aren't they separate systems?
- posted
19 years ago
How is the Turbo bypass cutoff valve related to the secondary air injection system? Why would a failed Turbo bypass valve throw a p0411 trouble code? Aren't they separate systems?
both valves need vacuum to operate. If the Turbo bypass cutoff valve diaphragm is cracked and leaking, then both systems has no vacuum to operate the secondary air injection system
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