# Secondary Air Relief Solenoid Circuit Malfunction **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [March 18, 2016, 5:05pm UTC](https://community.cartalk.com/t/secondary-air-relief-solenoid-circuit-malfunction/92797 "2016-03-18T17:05:58Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Moomoo](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@Moomoo](https://community.cartalk.com/u/Moomoo)\ **Post date:** [March 18, 2016, 5:05pm UTC](https://community.cartalk.com/t/secondary-air-relief-solenoid-circuit-malfunction/92797/1 "2016-03-18T17:05:58Z")
Hi, I have a 2010 Ford Escape. The engine light came on about 10 days ago. I ordered a OBD which arrived the day that the engine light went out (two days ago…) Anyway, the OBD showed a P1490, which, according to google means Secondary Air Relief Solenoid Circuit Malfunction. Unfortunately, google has not helped me find how to address the problem. Can anyone here? Thank you in advance. ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [March 18, 2016, 6:11pm UTC](https://community.cartalk.com/t/secondary-air-relief-solenoid-circuit-malfunction/92797/2 "2016-03-18T18:11:38Z")
A circuit malfunction code means that something is wrong with the circuit to the sensor. The trouble could be with the sensor itself but there could very well be a problem with the wiring between the ECU and the sensor in question so the connection wiring should be checked out before replacing the sensor. The wire connections should have good continuity between the two ends and no bridge connections to power or ground should be present. ---
**Author:** ![Moomoo](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@Moomoo](https://community.cartalk.com/u/Moomoo)\ **Post date:** [March 18, 2016, 7:53pm UTC](https://community.cartalk.com/t/secondary-air-relief-solenoid-circuit-malfunction/92797/3 "2016-03-18T19:53:44Z")
Great! I’ll look into it. Thank you! ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [March 19, 2016, 4:06am UTC](https://community.cartalk.com/t/secondary-air-relief-solenoid-circuit-malfunction/92797/4 "2016-03-19T04:06:20Z")
Are you able to tell which system this solenoid belongs to? EGR, Evap, A/T? That looks to be a Ford specific code, you may need to consult a dealer shop to get some more information on what the purpose of that solenoid is. Then someone here might be able to offer up something more specific.