DTC P0462-00: Fuel Gauge Sender Unit Circuit Low Input: Notes

DTC P0462:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0462:00	Fuel gauge sender unit circuit low input
DETECTION CONDITION	The PCM monitors the fuel level signal and fuel gauge sender unit output voltage from the instrument cluster. If the PCM detects that the fuel level, fuel gauge sender unit, or fuel gauge sender unit (SUB) output voltage is too low, the PCM determines that the fuel gauge sender unit or fuel gauge sender unit (SUB) circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light 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. (The check engine light may be illuminated depending on the malfunction conditions.) PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	Fuel gauge sender unit connector or terminals malfunction Fuel gauge sender unit (SUB) connector or terminals malfunction BCM connector or terminals malfunction Short to ground in wiring harness between the following terminals: - Fuel gauge sender unit terminal D-BCM terminal 2Q Fuel gauge sender unit (SUB) terminal A-BCM terminal 2T Fuel gauge sender unit signal circuit and ground circuit are shorted to each other Fuel gauge sender unit (SUB) signal circuit and ground circuit are shorted to each other Fuel gauge sender unit malfunction Fuel gauge sender unit (SUB) malfunction BCM malfunction Instrument cluster malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.