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.
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HOMESERVICE MANUALSVOLVO2011XC90 BASE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXUPPER ELECTRONICS MODULE (UEM) DTCS
2011 Volvo XC90 Base, FWD
Upper Electronics Module (UEM) DTCS
2011 Volvo XC90 Base, FWDSECTION Upper Electronics Module (UEM) DTCS
UPPER ELECTRONICS MODULE (UEM) - DTC INDEX
| DTC | Description |
|---|---|
| UEM-0004 | Siren. Communication fault |
| UEM-0005 | Sun roof. Communication fault |
| UEM-0007 | Reading lamp. Signal too low |
| UEM-0008 | Reading lamp. Signal too low |
| UEM-0009 | Reading lamp. Signal too low |
| UEM-000A | Movement sensor. Communication fault |
| UEM-000B | Movement sensor. Signal too low |
| UEM-000C | Mass movement sensor. Signal too high |
| UEM-0011 | Mass movement sensor. Signal too low |
| UEM-0013 | Movement sensor. Internal fault |
| UEM-0014 | Movement sensor. Internal fault |
| UEM-001C | General courtesy lighting. Signal faulty |
| UEM-001D | Reading lamp. Signal too high |
| UEM-001E | Reading lamp. Signal too high |
| UEM-0020 | Rear view mirror. Signal missing |
| UEM-0030 | Rear left reading lamp. Signal too low |
| UEM-0031 | Rear left reading lamp. Signal missing |
| UEM-0032 | Rear right reading lamp. Signal too low |
| UEM-0033 | Rear right reading lamp. Signal missing |
| UEM-0034 | Front left reading lamp. Signal too low |
| UEM-0035 | Front left reading lamp. Signal missing |
| UEM-0036 | Front right reading lamp. Signal too low |
| UEM-0037 | Front right reading lamp. Signal missing |
| UEM-0038 | General lighting. Signal too low |
| UEM-0039 | General lighting. Signal missing |
| UEM-003A | Extended X supply (EXT_X). Signal too low |
| UEM-003C | Cargo compartment lighting/3rd row reading lamps. Signal too low |
| UEM-003D | Cargo compartment lighting/3rd row reading lamps. Faulty signal |
| UEM-0041 | Control unit. Internal fault |
| UEM-0051 | Sunroof. Signal faulty |
| UEM-0052 | Sunroof motor. Signal too high |
| UEM-0053 | Sunroof motor. Signal too low |
| UEM-0054 | Sunroof motor. Signal too low |
| UEM-0056 | Sunroof motor. Signal too high |
| UEM-0057 | Sunroof motor. Signal too high |
| UEM-0058 | Sunroof motor. Signal too high |
| UEM-0059 | Sunroof motor. Signal too high |
| UEM-0060 | Sunroof motor. Signal too high |
| UEM-0061 | Sunroof motor. Signal too high |
| UEM-0062 | Sunroof motor. Signal too high |
| UEM-0063 | Sunroof motor. Signal too high |
| UEM-0064 | Sunroof. Signal too high |
| UEM-0065 | Sunroof. Signal faulty |
| UEM-0066 | Sunroof. Signal faulty |
| UEM-0067 | Sunroof. Signal faulty |
| UEM-0068 | Sunroof. Signal faulty |
| UEM-0070 | Sunroof. Signal faulty |
| UEM-0071 | Control unit. Internal fault |
| UEM-0072 | Control unit. Internal fault |
| UEM-0078 | Siren. Configuration fault |
| UEM-0080 | Rain sensor. Signal missing |
| UEM-0081 | Rain sensor. Signal too low |
| UEM-0082 | Rain sensor. Signal too high |
| UEM-0083 | Rain sensor. Internal fault |
| UEM-0084 | Rain sensor. Faulty signal |
| UEM-0090 | PAD lamp. Signal too low |
| UEM-0091 | PAD lamp. Signal too high |
| UEM-0093 | Seat belt reminder. Faulty signal |
| UEM-0094 | Seat belt reminder. Signal too high |
| UEM-00A0 | Tire pressure sensor. Signal missing |
| UEM-00A1 | Tire pressure sensor. Signal missing |
| UEM-00A2 | Tire pressure sensor. Signal missing |
| UEM-00A3 | Tire pressure sensor. Signal missing |
| UEM-00A4 | Tire pressure sensor. Low battery voltage |
| UEM-00A5 | Tire pressure sensor. Low battery voltage |
| UEM-00A6 | Tire pressure sensor. Low battery voltage |
| UEM-00A7 | Tire pressure sensor. Low battery voltage |
| UEM-00A8 | Tire pressure warning. Sensor missing |
| UEM-00A9 | Control module. Configuration fault |
| UEM-E001 | Control module communication. Faulty communication |
| UEM-E003 | Configuration fault. Faulty configuration |
| UEM-XXXX | Unknown diagnostic trouble code (DTC) for the current control module version |
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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.