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OBD2 Error Code, P1446 - Suggestions?

8286 Views 4 Replies 2 Participants Last post by  robc.yk
Hello folks,

Can you please give me some information on the following OBD2 code that my truck has:

It is a 2005 Crew Cab LE Titan 4X4

=== Stored Error Code(s) ===
Error Code: P1446
Possible Causes:

Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P1615.
2. Fuel System 1 Status - Open Loop.
3. Fuel System 2 Status - Open Loop.
4. Calculated LOAD Value - 0.00 %.
5. Engine Coolant Temp - 120.20 °F.
6. Short Term Fuel Trim - Bank 1 - 0.00 %.
7. Long Term Fuel Trim - Bank 1 - 0.00 %.
8. Short Term Fuel Trim - Bank 2 - 0.00 %.
9. Long Term Fuel Trim - Bank 2 - 0.00 %.
10. Engine RPM - 0.00 Rpm.
11. Vehicle Speed Sensor - 0.00 Mph.
12. Absolute Throttle Position - 0.00 %.

Monitor Information:

1. MIL - ON.
2. Misfire Monitoring - Complete.
3. Fuel System Monitoring - Complete.
4. Comprehensive Component Monitoring - Complete.
5. Catalyst Monitoring - Complete.
6. Heated Catalyst Monitoring - Not Supported.
7. Evaporative System Monitoring - Complete.
8. Secondary Air System Monitoring - Not Supported.
9. A/C System Refrigerant Monitoring - Not Supported.
10. Oxygen Sensor Monitoring - Complete.
11. Oxygen Sensor Heater Monitoring - Complete.
12. EGR System Monitoring - Not Supported.

Thank You
Rob C.
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1 - 5 of 5 Posts
P1446 is a vent control valve code. The valve that attaches to the vaor cannister under the truck. There is a bulletin for this that includes repalcing the valve and installing a filter kit.
P1615 is a Nats malfunction code. could be voltage, unprogramed key, remote start issue, etc etc etc.....
Bulletin?

Could this cause big problems or can it be ignored till my next service?
the worse that can happen is possible difficulty in putting gas in the truck.
With the price of gas here, $1.20+ /L, perhaps it's not such a bad thing..... JK.

I will have to get my 1500KM away dealer to agree to put it into a local shop to look at.
1 - 5 of 5 Posts
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