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2004 Chevy Colorado P0506 and P1133

Tiny
CKEITHUK
  • MEMBER
  • 2004 CHEVROLET COLORADO
Computer problem
2004 Chevy Colorado 4 cyl Two Wheel Drive Automatic

My engine lite is on and when I do a diagnostic test P0506 and P1133 are the codes that come up. Can you tell me what they mean?
Tuesday, August 10th, 2010 AT 7:59 AM

1 Reply

Tiny
BIGJOE1986
  • MEMBER
  • 7 POSTS
P0506
This means low engine speed and probable causes could be:

1. Vacuum leak on engine.
2. Dirty throttle body.
3. IAC motor defective
4. Poor electrical connection to the IAC valve

P1133
A/F Sensor Circuit Response Malfunction!

Oxygen sensor bank one sensor one slow response or at limit
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Wednesday, August 25th, 2010 AT 6:33 PM

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