P0410 Secondary Air Injection System Malfunction

Description and meaning of DTC p0410

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. The P0410 code refers to the emissions system. The AIR pump puts air to theexhaust to lower emissions. It takes in outside air and pumps it through twoone-way check valves into each bank of the exhaust. About 90% of the time that this code is set, the one-way check valves haveworn out or failed and allow water (which occurs naturally in the exhaust) backinto the pump. In any cold climate, especially in climates with higher humidity,this water may be more excessive. The water partially fills the AIR pump, itcan then freeze. When the PCM commands the pump on, if the pump is frozen itcannot turn, thus overloading the circuit and popping the fuse. Other secondary air injection system trouble codes include P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, P0491, and P0492.

p0410 diagnostic trouble code symptoms

Possibly symptoms include:MIL illumination obviouslyHesitation on accelerationNoise from a bad/stuck AIR pump

DTC p0410 - possible causes

A code P0410 may mean that one or more of the following has happened:Water may have collected in the AIR pump or the vent solenoid and frozenor corroded the pumpBlown AIR pump fuse due to freezing up

How to fix OBD-II diagnostic trouble code p0410

Note: There is a technical service bulletin (TSB) regarding this code for anumber of GM models. The TSB calls for the replacement of the AIR pump and theinstallation of a new secondary injection hose. The TSB can be found on thisACDelco site. Additionally, if you simply replace the AIR pump the problem may return again(and again). If you replace the pump, also clean out the hoses and replace theone-way check valve. If this is on a GM model that the TSB applies to, followthose instructions in the link above. In a few cases, people have put a smallhole in the rubber cover on the pump which allows any water to drain out. Also, please note that this may be covered under the emissions warranty onthe vehicle. If your vehicle is out of bumper-to-bumper warranty, check if theemissions warranty is still valid!Replace the AIR pump AND one-way check valveTest and clean the AIR pump AND test and replace the one-way air check valveReplace the AIR pump inlet hoseReplace the AIR pump fuse (found under the hood)Sources: GM-Forumsthread

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