Code Definition

B1011 — Ambient temperature sensor signal Circuit shorted

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

About B1011

B1011 is a manufacturer-specific body diagnostic trouble code recorded for Mitsubishi vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1011 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit; 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.

B1011 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

The ambient temperature sensor on Mitsubishi vehicles is a Negative Temperature Coefficient (NTC) thermistor typically mounted behind the front bumper or in the lower grille area, where it measures outside air temperature. DTC B1011 is set when the HVAC control module detects a short circuit condition in the ambient temperature sensor signal circuit, causing the sensor to report an implausibly low resistance value that does not correspond to a realistic outside temperature. The sensor works by varying its resistance in proportion to the surrounding air temperature — as temperature increases,...

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