Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSCCM CODES (CLIMATE CONTROL MODULE)CCM-0021INTERNAL FAULT
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
Internal Fault
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Internal Fault
Internal fault
Checking the function
The climate control module (CCM) has registered an internal fault in the air quality sensor. If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the control module or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs. If the fault recurs, replace the air quality sensor.
In the event of a permanent fault, replace the air quality sensor. See Air quality sensor, replacing Service and Repair.
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied:
- Ignition off
- Reconnect the connectors, reinstall components etc.
- Ignition on
- Check that the value from the air quality sensor is within the permitted range.
The value should be between 4% and 96%.
Are the values correct?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - Fault Found
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Checking the function
FAULT-TRACING FAILED - No Fault Found
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.