DTC P0461: Fuel Level Sensor Circuit Range/Performance

CIRCUIT OPERATION
• The fuel level sensor output voltage is input in ECM (terminal No. 74) <M/T> or PCM (terminal No. 60) <A/T>.
TECHNICAL DESCRIPTION
• Branch the output voltage from the fuel level sensor circuit, and input it into ECM <M/T> or PCM<A/T>.
• The ECM <M/T> or PCM<A/T> detects the amount of fuel left in the fuel tank with this voltage, and also controls the fuel level warning light.
DESCRIPTIONS OF MONITOR METHODS
• If the change in the fuel level sensor output is found to be small through a comparison of the fuel consumption volume (obtained from the injector actuation duration) and the fuel volume in the fuel tank (obtained from the fuel level sensor), a malfunction is determined to have occurred.
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 Condition, Judgement Criterion
• When the fuel consumption calculated from the operation time of the injector amounts to 20 litters (5.3 gal), the diversity of the amount of fuel in tank calculated from the fuel level sensor is 2 litters (0.5 gal) or less.
OBD-II DRIVE CYCLE PATTERN
None.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:
• Fuel level sensor failed.
• Harness damage or connector damage in fuel level sensor circuit.
• ECM failed. <M/T>
• PCM failed. <A/T>