OBD LensWhat do Bank and Sensor mean?
Bank 1 is the side containing cylinder 1. Bank 2 is the other side on V or flat engines; inline engines have only Bank 1. Cylinder numbering depends on the engine, so check the manufacturer’s layout.
For exhaust oxygen sensors, Sensor 1 is upstream, closest to the engine; Sensor 2 is downstream, after the catalyst. Confirm the exact sensor layout in the vehicle’s service information.
Other-bank reference: P013C. A paired definition does not prove that your engine has both banks.
Generic OBD2: P013A
Heated oxygen sensor (HO2S) 2, bank 1 - slow response rich to lean
- Reference namespace
- obd2
- Source revision
- legacy-2.2.20
Generic OBD2 definition; confirm the protocol and vehicle-specific service information.
What should I check before using this definition?
Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.
Organize a scan report or recordingOBD Lens production library legacy-owner-2026-11-02-v84-evidence. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.
Read the reference methodWhat does P013A mean?
Heated oxygen sensor (HO2S) 2, bank 1 - slow response rich to lean. 1 reference families define this identifier: Generic OBD2.
Is P013A a generic or manufacturer-specific code?
This code has a generic OBD-II prefix. Confirm the reference scope shown above.
Can P013A tell me which part has failed?
This entry does not identify a failed part by itself. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair.