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2003 XC90 - CCM codes: air quality sensor: signal too low/too high

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
Volvo Kush
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Year and Model: XC90 2003
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2003 XC90 - CCM codes: air quality sensor: signal too low/too high

Post by Volvo Kush » Fri Aug 05, 2016 1:36 pm

Vehicle: XC90 2003 2.9 T6
Problem: A/C clutch doesn't engage. (initial thread: http://goo.gl/nU3WiL )

Got my CMM codes read today:
CCM-001F air quality sensor: Signal too high
CCM-0020 air quality sensor: Signal too low
CCM-0004 compressor: Faulty signal

Where are these sensors located? I would want to attempt cleaning them before paying for the replacement.

Thanks in advance

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