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P0410 BUICK

P0410 BUICK - Secondary Air Injection System Malfunction

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Possible causes
- Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed
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Tech notes
Visually inspect AIR pump and AIR bypass valve harness and connector, if connector are OK, then replaced AIR bypass valve.
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When is the code detected?
The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation
P0410 BUICK Description
An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.
BUICK Technical Service Bulletins for P0410 code
2000 BUICK REGAL ENGINE AND ENGINE COOLING:ENGINE Details
2001 BUICK REGAL ENGINE AND ENGINE COOLING:ENGINE Details
2002 BUICK REGAL ENGINE AND ENGINE COOLING:ENGINE Details
2000 BUICK REGAL 061000 ENGINE AND ENGINE COOLING:ENGINE Details
2001 BUICK REGAL 061000 ENGINE AND ENGINE COOLING:ENGINE Details
2002 BUICK REGAL 061000 ENGINE AND ENGINE COOLING:ENGINE Details
2004 BUICK RAINIER ELECTRICAL SYSTEM Details
1996 BUICK ROADMASTER ENGINE AND ENGINE COOLING:EXHAUST SYSTEM Details
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