What you mine p1481 - 2002 GMC Envoy

P1352 - Ignition Coil 'A' Primary Circuit Malfunction P1481 - Fan Secondary Low With High Fan On P1335 - Crankshaft Position Sensor P0180 - Fuel Temperature Sensor 'A' Circuit Malfunction

P1351 - IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage P1350 - Fuel Level Sensor 'B' Intermittent/Bypass Line Monitor P0115 - Engine Coolant Temperature Circuit Malfunction

P0440 = evaporative emissions system leak...check gas cap , hoses

P0151 = evaporative emissions systems sensors (O2 sensor, usually the O2 sensor between engine and catalytic converter on Cylinder Bank 2 (the side of the engine with the even-numbered cyclinders, usually left side from under hood if engine is mounted axially, rear of engine if it is mounted transversely)

P1481 = cooling fan speed

For mini cooper
P1481 - is
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled Description Fan Secondary Low With High Fan On Conditions
Cause Key on or engine running, high speed cooling fan enabled, then the PCM detected the fan secondary circuit was low (with the high speed cooling fan on).
and

P1484 -
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled Description Open Power Ground to VLCM Conditions
Cause Key on or engine running, then the PCM detected that the VLCM power ground circuit was open.

hope i can help you, or you can ask the 24 hrs live technical support http://www.spobd2.com/service, they will like to help you, good luck

P1481 definition is coolant fan speed,The wire on this sensor tends to chaff through the plastic it is routed through,this is very common, the fix is to replace thhe harness remove the harness from the plastic guide,and repair for opens, or chaff,

Code P1481 - Cooling Fan Speed Sensor Circuit

Several owners repair this sensor and connections, but the problem come on again; I suggest replace the sensor; this is built into the fan clutch.

Hope helps.

Code P1481 - Cooling Fan Speed Sensor Circuit

Several owners repair this sensor and connections, but the problem come on again; I suggest replace the sensor; this is built into the fan clutch.

Hope helps.

TSB#05-06-02-012B: Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) - (Oct 19, 2006)
Subject:
Service Engine Soon (SES) or Check Engine Light On, DTC P0480/P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness)
Condition
Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.
Cause
This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.

Correction
Replace the engine cooling fan harness using the procedure listed below.

1. Remove the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

2. Place the cooling fan assembly on a bench.
Disconnect the harness electrical connector from the cooling fan clutch.

3. Remove the harness from the plastic guide while feeding the wires out of the slot.

4. Before installing the new harness, wrap the affected area on the wires with electrical tape to keep the protective sleeve in place. Be sure to keep the tape approximately 25 mm (1 in) away from the connector so the wires can be fed into the slot.

5. Feed the wires into the slot and install the harness to the plastic guide.

6. Connect the harness electrical connector to the cooling fan clutch.

7. Install the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

Part Number 89024920

Description
Harness Assembly, Engine Cooling Fan Wiring
Thank you for using fixya.

Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) #05-06-02-012B - (10/19/2006)

Models:2004-2006 Buick Rainier
2002-2006 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2006 GMC Envoy, Envoy XL, 

Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.

This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.

Replace the wire harness: 
Part Number 89024920 Description Harness Assembly, Engine Cooling Fan Wiring

Good luck and keep me posed. 

it sounds like the connection to the clutch or to the computer or your pcm is going bad

Read this. Fan.