Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- A current DTC Last Test Failed clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
- Clear the DTC with a scan tool.
DTC P0A7F
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Starting and Charging Schematics (Except HP2)
or Starting and Charging Schematics (HP2) Connector End View Reference: Engine Electrical Connector End Views |
||||
| 1 | Did you perform the Engine Electrical Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Engine Electrical |
| 2 | Test each battery for low charge or over charge. Refer to battery testing and inspection Battery Inspection/Test (Non-HP2)
or Battery Inspection/Test (HP2)
. Do the batteries test good? |
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Replace the appropriate battery. Refer to Battery Replacement Energy Storage Box (ESB) Battery Replacement (5.3L Engine w/RPO HP2)
. Did you complete the replacement? |
- | Go to Step 4 | - |
| 4 |
|
- | Go to Step 2 | System OK |