Hey guys, I am visiting family and need some quick reassurance. Last night I need to move the truck and it was not plugged in. It took 3 tries to start the engine and it was not happy when it did. Now I have a check engine light and a P0514 code. The code does not seem to be anything serious but would the engine light be on to indicate a code like this?

When it did start last night it smoked real bad. I had it pugged in all night and this morning it started fine and did not smoke.

Oh and it was like 0 degrees.

 

There have been a lot of posts recently about the 0514 code. Mine has been throwing it everytime the temperature dips below freezing. One post recently stated that the dealership thought it was a software problem and there was no fix at this time. I haven't done anything about the code or light. After it warms up slightly and a certain # of start cycles my code disappears....until the temp drops again.

I think you'll find more about this in the 3rd gen engine forum.

 

It is the first time I have gotten any code. I just wanted to make sure that this code is the reason the engine light came on. I assume that the engine light comes on if you have a trouble code so that you know to check for one.

 

P0514-BAT TEMPERATURE SENSOR RATIONALITY











For the Engine circuit diagram (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE - SCHEMATIC - ELECTRICAL)
For a complete wiring diagram Refer to Section 8W.
When Monitored:
While the engine is running.
Set Condition:
The ECM does not read a change in value from the sensor over time.

Possible Causes
BATTERY TEMP SENSOR
INTERMITTENT CONDITION
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
Diagnostic Test
1. BATTERY TEMP SENSOR

Remove the temperature sensor and reconnect the wiring harness connector to the sensor.
Monitor scan tool, while heating the sensor with an external heat source (DO NOT USE OPEN FLAME).
Does the reading from the sensor increase at least 5 degrees F. on the scan tool?
Yes
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Replace the battery temperature sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

 

Yes, the check engine light will illuminate when a trouble code is set. If that is the only code that was stored then yes, that is the code that turned on your check engine light.

 

Thanks handymantim. I did se though where there is another code, P0341. The engine light is gone but the codes are still there. Will they be cleared at some point or do I need to take it in to have them cleared.

 

This is from the 2004 shop manual:

Once the MIL has been extinguished by the Good
Trip Counter, the PCM automatically switches to a
Warm-Up Cycle Counter that can be viewed on the
DRB III. Warm-Up Cycles are used to erase DTCs
and Freeze Frames. Forty Warm-Up cycles must
occur in order for the PCM to self-erase a DTC and
Freeze Frame. A Warm-Up Cycle is defined as follows:
² Engine coolant temperature must start below
and rise above 160° F
² Engine coolant temperature must rise by 40° F
² No further faults occur

 

Cool then as long as I do not have any more problems they will eventually be gone.

Thanks