99 coupe with 74k
check engine light just came on
downloaded the following codes:

P0719H
P0440HC
U1160H
2282H
2284H
U1064H
B2283H
B2285H
U1064H

are these all active problem codes, or would it show previous repaired problems???

 

I'm not sure but I believe that all the H codes are history codes. Anyone else with contradicting info?

Try to clear and see what comes back.

 

The ones with an H suffix, are History codes, and should be cleared to see if they come back ...
they probably won't if corrected. The P0440 is now Current (C suffix) and is what has set the Check engine light... it indicates a problem (leak?) in the EVAP system...most likely a loose gas cap that was not tightened enough (clicked 3 times) OR the gas cap seal is bad & cap needs replacing.

 

thanks guys!
reset all of the "H" codes and going to pick up a new gas cap

Boy, this internet thing is awesome

 

P0440 Circuit DescriptionThe PCM tests the EVAP system for the following conditions:
Large and small leaks

Excess vacuum
Purge flow during non-commanded conditions
Fuel Level and Fuel Pressure sensor faults
EVAP Purge and Vent Valve faults

The PCM monitors the Fuel Tank Pressure sensor in order to determine

the level of vacuum/pressure in the EVAP system. The PCM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the Conditions for Running the DTC are met in order to apply an engine vacuum to the EVAP system. The PCM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.

This DTC sets after twice failing the above test.

Conditions for Running the DTC
DTCs P0107, P0108, P0112, P0113, P0117, P0118, P0125, P0420,P0430, P0500, P0502, P0503, P0562, P0563, P1120, P1220, P1221, and HO2S DTCs not set.
The ignition voltage is between 10volts and 18volts.
The barometric pressure is greater than 75kPa.
The fuel level is between 15% and 85% of full capacity.
The engine coolant temperature is between 4& deg;C (39 deg;F)
and 30 deg;C (86deg;F).
The intake air temperature is between 4 deg;C (39 deg;F) and 30 deg;C (86 deg;F).
The start up engine coolant and intake air temperatures are within 9 deg;C (16 deg;F) of each other.

Conditions for Setting the DTC
The EVAP system cannot develop a vacuum greater than a predetermined value.

Important This DTC does not report a first failed test. A first fail of this DTC will have a scan tool status as Not Run. Use the scan tool data display parameter of EVAP Test Result to determine if this DTC has failed or passed for this ignition cycle

Action Taken When the DTC Sets

The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The PCM records the operating conditions at the time the diagnostic
fails. The first time the diagnostic fails, the PCM stores this information
in the Failure Records. If the diagnostic reports a failure on the second
consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

The PCM turns OFF the malfunction indicator lamp (MIL) after3 consecutive ignition cycles that the diagnostic runs and does not fail.
A last test failed, or current DTC, clears when the diagnostic runs and does not fail.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by

Complete info at http://www.gearchatter.com/viewtopic10027.php