Time Needed for Diagnosis: Less than 1 second
P0464
DTC P0464 FUEL LEVEL SENSOR CIRCUIT INTERMITTENT
1. OUTLINE OF DIAGNOSIS
Detect the unstable output faults from the fuel level sensor caused by noise. Judge as NG when the max. value and cumulative value of
output voltage variation of the fuel level sensor is larger than the threshold value.
2. ENABLE CONDITION
3. GENERAL DRIVING CYCLE
- Always perform the diagnosis continuously at idle speed.
- Pay attention to the fuel level.
4. DIAGNOSTIC METHOD
Calculate the Max. value (DELFLMAX) and cumulative value (SUMFL) of output voltage variation of fuel level sensor during 12.2 seconds.
Judge it normal when both max. and cumulative values are not over the threshold value. Otherwise, when either of them is over the threshold
value, the diagnosis counter counts up. Judge as NG if the counter indicated 4 time(s).
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