Mazda RX-8 Manual page 774

DTC P0462
DTC P0462 Fuel gauge sender unit circuit low input
DETECTION
CONDITION
POSSIBLE
CAUSE
The PCM monitors the fuel tank level and input voltage from the fuel gauge sender
•
unit when the engine is running. If the input voltage is less than 2.5 V and fuel tank
level is full, the PCM determines that the fuel gauge sender unit circuit input
voltage is low.
Diagnostic support note
This is a continuous monitor (CCM).
•
The MIL illuminates if the PCM detects the above malfunction condition in two
•
consecutive drive cycles or in one drive cycle while the DTC for the same
malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction condition
•
during the first drive cycle.
FREEZE FRAME DATA is available.
•
The DTC is stored in the PCM memory.
•
Fuel gauge sender unit malfunction
•
Instrument cluster malfunction
•
PCM malfunction
•
(w) Engine Diagnostics & Control
Page 211