Code Definition

B1219 — Fuel Tank Pressure Sensor Circuit Failure

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

About B1219

B1219 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1219 is stored, the module has detected 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.

B1219 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 Fuel Tank Pressure (FTP) sensor measures vapour pressure inside the fuel tank and reports this information to the control module for Evaporative Emissions (EVAP) leak detection, canister purge strategy, and fuel tank venting control. DTC B1219 is set when the control module detects that the FTP sensor signal voltage has fallen outside the expected operating range, indicating an open circuit, a short to ground, a short to battery, or an internal sensor failure. The sensor typically mounts on top of the fuel tank or integrates into the fuel pump module assembly and operates as a pressure sen...

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