Code Definition

B0533 — Fuel level sensor signal Circuit open or shorted to power

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B0533

B0533 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0533 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; 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.

Because B0533 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

DTC B0533 is a generic body code that indicates the instrument cluster or body control module has detected the fuel level sensor signal sitting at or near the reference voltage rail continuously, which is the electrical signature of either an open circuit on the signal path or a short to a battery or reference voltage source. The fuel level sensor is a float-and-arm variable resistor inside the fuel tank, and the receiving module supplies a fixed reference voltage and reads the divided voltage drop across the sender to calculate fuel quantity. When the signal wire is open or pulled to power, t...

Join TaT to view the complete code information and diagnostic details.

Quick Facts