Diagnostic Fault Information
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Always perform the Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
DTC P2A01
| Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
| HO2S High Signal | P0137, P0140, P2A01 | P0137, P0140, P2A01 | P0137, P0140, P2A01 | P0138, P0140, P2A01 | P0140, P2A01 |
| HO2S Low Signal | P2A01 | P0137, P0138, P0140, P2A01 | P0137, P0138, P0140, P2A01 |
P0138, P0140, P2A01 | P2A01 |