99 coupe got 2 codes today

P0719HC
P0440HC

from what I could find here:
P0719 = Brake switch circuit low input
P0440 = Evaporative Emission (EVAP)
H= History
C= Current


for now I reset the codes, but I have a feeling they'll pop up again
any idea on what these actually mean? and what I can do to check or repair them?
thanks

 

For the 440, maybe as simple as a bad or loose gas cap.
http://www.gearchatter.com/viewtopic10027.php

 

replaced the gas cap the last time this code came up.

 

Tighten the cap (make sure it clicks several times), clear the code and see what happens.

You must have an automatic if you got the 719 code.

DTC P0719 Brake Switch Circuit Low Input
Circuit Description
The brake switch indicates brake pedal status to the powertrain control module (PCM). The brake switch is a normally-closed switch that supplies battery voltage on circuit 420 to the PCM. Applying the brake pedal opens the switch, interrupting voltage to the PCM. When the brake pedal is released, the PCM receives a constant voltage signal. If the PCM receives a zero voltage signal at the brake switch input, and the torque converter clutch (TCC) is engaged, the PCM de-energizes the TCC solenoid valve. The PCM disregards the brake switch input for TCC scheduling if there is a brake switch circuit fault (Refer to Diagnostic Aids).
When the PCM detects an open brake switch circuit (0 volts, low input) during accelerations, then DTC P0719 sets. DTC P0719 is a type D DTC.

Conditions for Running the DTC
• No VSS assembly DTCs P0502 or P0503.
• The ignition switch is in the ON position.

Conditions for Setting the DTC
The PCM detects an open brake switch circuit (0 volts) for 15 minutes without changing for 2 seconds, and the following events occur seven times:
• The vehicle speed is less than 8 km/h (5 mph);
• then the vehicle speed is 8-32 km/h (5-20 mph) for 4 seconds;
• then the vehicle speed is greater than 32 km/h (20 mph) for 6 seconds.

Action Taken When the DTC Sets
• The PCM does not illuminate the malfunction indicator lamp (MIL).
• The PCM disregards the brake switch input for TCC scheduling.
• The PCM stores DTC P0719 in PCM history.

Conditions for Clearing the DTC
• A scan tool clears the DTC from PCM history.
• The PCM clears the DTC from PCM history if the vehicle completes 40 consecutive warm-up cycles without a non-emission-related diagnostic fault occurring.
• The PCM cancels the DTC default actions when the fault no longer exists and the ignition switch is OFF long enough in order to power down the PCM.

Diagnostic Aids
• Inspect the wiring at the PCM, the brake switch connector and all other circuit connecting points for the following conditions:
o A backed out terminal
o A damaged terminal
o Reduced terminal tension
o A chafed wire
o A broken wire inside the insulation
o Moisture intrusion
o Corrosion
• When diagnosing for an intermittent short or open condition, massage the wiring harness while watching the test equipment for a change.
• If the PCM detects a brake switch circuit fault, then the brake switch input is disregarded for TCC scheduling. The PCM then uses throttle position and vehicle speed to determine TCC application and release. Use of these inputs may result in a noticeable harsh apply or abrupt release of the TCC.
• Ask about the customer's driving habits. Ask about unusual driving conditions (e.g. stop and go, expressway, etc.).
• Inspect the brake switch for proper mounting and operation.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. This step isolates the brake switch as a source for setting the DTC.

DTC P0719 Brake Switch Circuit -- Low Input
Step------Action-------------------- Value(s)------Yes---------- No
Step 1
Was the Powertrain On-Board Diagnostic (OBD) System Check performed? -- Go to Step 2
Go to Powertrain On Board Diagnostic (OBD) System Check

Step 2
1. Install the Scan Tool .
2. With the engine OFF, turn the ignition switch to the ON position.
Important
Before clearing the DTC, use the scan tool in order to record the Failure Records. Using the Clear Info function erases the Failure Records from the PCM.
3. Record the DTC Failure Records.
4. Clear the DTC.
5. Select TCC Brake Switch on the scan tool.
6. Disconnect the brake switch connector from the brake switch.
7. Connect a test lamp from cavity B of the brake switch connector to a known good ground.
Is the test lamp ON? -- Go to Step 3
Go to Step 4

Step 3
Install a fused jumper wire from terminal A to terminal B of the brake switch connector.
Did the TCC Brake Switch status change from Open to Closed? -- Go to Step 7
Go to Step 9

Step 4
1. Remove the ENG IGN 1 fuse.
2. Inspect the fuse for an open.
Refer to General Electrical Diagnosis Procedures in Wiring Systems.
Is the fuse open? -- Go to Step 5
Go to Step 8

Step 5
Important
The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to Electrical Diagnosis for complete circuit distribution.
1. Inspect circuit 339 (PNK) for a short to ground condition. Refer to General Electrical Diagnosis Procedures in Wiring Systems.
2. Repair the circuit if necessary. Refer to Wiring Repairs in Wiring Systems.
Was a short to ground condition found? -- Go to Step 11
Go to Step 6

Step 6
1. Inspect circuit 420 (PPL) for a short to ground condition. Refer to General Electrical Diagnosis Procedures in Wiring Systems.
2. Repair the circuit if necessary. Refer to Wiring Repairs in Wiring Systems.
Was a short to ground condition found? -- Go to Step 11
Go to Step 10

Step 7
Replace the brake switch.
Refer to Stop Lamp Switch Replacement in Hydraulic Brakes.
Is the replacement complete? -- Go to Step 11
--
Step 8
Important
The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to Electrical Diagnosis for complete circuit distribution.
1. Inspect circuit 339 (PNK) for an open condition. Refer to General Electrical Diagnosis Procedures in Wiring Systems.
2. Repair the circuit if necessary. Refer to Wiring Repairs in Wiring Systems.
Was an open condition found? -- Go to Step 11
--
Step 9
1. Inspect circuit 420 (PPL) for an open condition. Refer to General Electrical Diagnosis Procedures in Wiring Systems.
2. Repair the circuit if necessary. Refer to Wiring Repairs in Wiring Systems.
Was an open condition found? -- Go to Step 11
Go to Step 10

Step 10
Replace the PCM.
Refer to PCM/TAC Module Replacement in Engine Controls.
Is the replacement complete? -- Go to Step 11
--
Step 11
Perform the following procedure in order to verify the repair:
1. Select DTC.
2. Select Clear Info.
3. With the engine OFF, turn the ignition switch to the ON position.
4. Apply and release the brake pedal.
5. Verify that the scan tool TCC Brake Switch status indicates Closed (12 volts) for 2 seconds.
6. Select Specific DTC.
7. Enter DTC P0719.
Has the test run and passed? -- System OK Go to Step 1

Bill