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2006 Ford Focus secondary air

Tiny
LUIES01
  • MEMBER
  • 2006 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 98,000 MILES
This ford is a zx3. It started throwing codes for secondary air intake, mainly "low flow" to left port and for secondary air one way check valve. This leads me to think I need to replace the check valve but nowhere can I find anything to tell me where it is. Can you give me a location and will (for example) a universal one from auto zone work. I also read online that a couple people drilled a small hole in the bottom of the blower to avoid condensation from going into the engine? Supposedly no more trouble>
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Sunday, February 22nd, 2015 AT 1:45 PM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
What engine and what is the code?
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Sunday, February 22nd, 2015 AT 1:50 PM
Tiny
LUIES01
  • MEMBER
  • 17 POSTS
If I remember correctly p491 and 492, code reader saying "insufficient flow bank 1(left bank) and 492 "one way check valve". The car started having a problem starting this morning so I cleared the codes and started right up. Maybe coincidence.
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Sunday, February 22nd, 2015 AT 2:00 PM
Tiny
LUIES01
  • MEMBER
  • 17 POSTS
Sorry, a zx3 ztech dohc engine I believe
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Sunday, February 22nd, 2015 AT 2:01 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
One pic shows causes other pic shows location of pump which solenoid should be near it. Solenoid is in another pic.
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+2
Sunday, February 22nd, 2015 AT 2:06 PM
Tiny
LUIES01
  • MEMBER
  • 17 POSTS
OK, tell me if I'm wrong. Picture 1 shows secondary air pump under front bumper/passenger side. Picture 2 shows secondary air one way check valve connected to engine on right side(red arrow)? According to code reader just check valve may be the problem.
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Sunday, February 22nd, 2015 AT 2:13 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The solenoid may be the problem or not, could be no power to it as well so check for a fuse or relay under hood that may not be working. Third pic shows why codes is set
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Sunday, February 22nd, 2015 AT 3:26 PM
Tiny
LUIES01
  • MEMBER
  • 17 POSTS
Just checked, codes are p410 and 491 insufficient flow bank 1.
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Sunday, February 22nd, 2015 AT 3:41 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Follow what I've already replied to and make sure you give engine size on next question not 4 cyl dohc 2.0L or 2.3L
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Monday, February 23rd, 2015 AT 7:20 AM

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