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P0411 Diagnostic Trouble Code Discussion for March 2005

Secondary AIR System Incorrect Airflow Detected

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Trouble Ticket Help Requests for DTC P0411
Help Request Posted
2000 Ford Mustang 3.8L MIL Lamp on VIN: 1FAFP4047X
P0411: Secondary Air Injection System Upstream Flow Detected. ... mustang fail emmisson code p0411. i check electric air pump ok if apply voltage to pump. its runs. check relay is ok .at relay black wire with yellow stripe has voltage. grounding white with orange stripe pump run at same time white wire has voltage also s...
March 01, 2005
1998 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP57U5W
P0411: secondary air injection system. Hello,Got a tough one here.I have fixed many of these with this code over the years, but this one is just beating me up.This PO411 code has been a problem for me over the past several months.I have gone through the flow chart many times and have never found an...
March 24, 2005
1995 Mercedes-Benz C220 2.2L MIL Lamp on VIN: WDBHA22EXS
P0411: Secondary Air Injection. Have had vehicle here twice with Code PO411 secondary air injection. Can't find any troubleshooting info. No help in the datafix base. Secondary air pump works.Appreciate the help.
March 25, 2005
1997 Volkswagen Passat GLX 2.8L MIL Lamp on VIN: WVWEE83AOV
P0411: Secondary Air Injection Flow Problem. Code keeps on returning after following all the flow charts, and nothing is being found wrong. All tests are passing, except for the valve that was replaced.
March 28, 2005