Code Definition

B1292 — Catalyst Temperature Bank 1 Sensor 1

System: Body  |  Type: Manufacturer-Specific  |  Make: Mazda

About B1292

B1292 is a manufacturer-specific body diagnostic trouble code recorded for Mazda vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1292 is stored, the module has detected a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1292 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC B1292 is set by the Powertrain Control Module (PCM) when it detects a fault with the Bank 1 Sensor 1 catalyst temperature sensor or its circuit. This sensor measures the temperature of the catalytic converter and reports it to the PCM as a varying voltage or resistance, allowing the module to protect the catalyst from overheating and to support emissions monitoring. B1292 sets when the PCM sees an open circuit, a short to ground or voltage, or a signal that is out of the expected range or implausible for the current operating conditions. When the code is active the PCM may disable or alter...

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