My neon's check engine light has recently come on and is showing three different codes. I was wondering what they meant, and how to fix them.

P0141 (M) 1/2 O2 Sensor Heater Failure Oxygen sensor heater element malfunction
P0551 (M) Power Steering Switch Failure Incorrect input state detected for the power steering
switch circuit. PL: High pressure seen at high speed
P1490 (M) Low Speed Fan Control Relay Circuit An open or shorted condition detected in the control
circuit of the low speed radiator fan control relay

 

P0141-O2 SENSOR 1/2 HEATER PERFORMANCE

When Monitored: Engine Running and Heater duty cycle greater than 0%.
Set Condition: O2 Heater Temperature does not reach 350°C (662°FL) within 90 second
during monitoring conditions. Two Trip Fault.

POSSIBLE CAUSES
O2 SENSOR HEATER OPERATION
O2 HEATER ELEMENT
O2 HEATER GROUND CIRCUIT OPEN
O2 HEATER CONTROL CIRCUIT OPEN
PCM

 

P0551-POWER STEERING SWITCH PERFORMANCE

When Monitored: Engine running. Vehicle speed at 50 MPH (80.5 KMh) or greater.
Coolant temperature above 20°C (68°F).
Set Condition: The power steering pressure switch remains open for 40 seconds or
greater while both the vehicle speed is at 50 MPH (80.5 KMh) and the engine coolant
temperature above 20°C (68°F). Two trip fault.

POSSIBLE CAUSES
GOOD TRIP COUNTER = 0
POWER STEERING PRESSURE SWITCH (Z12) GROUND CIRCUIT OPEN
(K10) PSP SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
(K10) PSP SWITCH SIGNAL CIRCUIT OPEN
POWER STEERING PRESSURE SWITCH
PCM

 

the funny thing about these neons, is that one of those codes could of thrown the other 2 as well.