DTC P0461: Fuel Level Sensor Circuit Range/Performance

CIRCUIT OPERATION
• The fuel gauge drive signal is input in PCM (terminal No. 60).
TECHNICAL DESCRIPTION
• Branch the drive signal from the fuel gauge circuit, and input it into PCM.
• The PCM detects the amount of fuel left in the fuel tank with this signal, and also controls the fuel level warning light.
DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if change of fuel level sensor output voltage is small when sum of fuel injection is large.
MONITOR EXECUTION
Continuous
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
• Not applicable

Sensor (The sensor below is determined to be normal)
• Not applicable
DTC SET CONDITIONS Logic Flow Chart


Check Conditions, Judgement Criteria
• When the fuel consumption calculated from the operation time of the injector amounts to 20 litters, the diversity of the amount of fuel in tank calculated from the fuel level sensor is 2 litters or less.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle - Procedure 6 - Other Monitor .
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
• Fuel level sensor failed.
• Open or shorted fuel level sensor circuit, harness damage or connector damage.
• PCM failed.