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x******n
发帖数: 2 | 1 马自达 6 2005年六缸.
Check Engine灯亮了一段时间,有时候自己灭了,这段时间不灭了...
OBDII code 是P2189
System Too Lean at Idle - Bank 2
Air Filter 刚换过．请问可能是什么毛病？
我把详细信息贴上来.谢谢．
Diagnostic Trouble Code Information
MIL DTC
P2189
System Too Lean at Idle - Bank 2
Conditions For Setting This Code:
Possible Causes:
Monitor Information:
Diagnostic Information
Freeze Frame Information
Parameter Description Value
DTC for which Freeze Frame was Stored P2189
Fuel System 1 Status Closed Loop
Fuel System 2 Status Closed Loop
Calculated LOAD Value 22.75 %
Engine Coolant Temp 174.20 °F
Short Term Fuel Trim - Bank 1 8.59 %
Long Term Fuel Trim - Bank 1 20.31 %
Short Term Fuel Trim - Bank 2 8.59 %
Long Term Fuel Trim - Bank 2 20.31 %
Engine RPM 657.00 rpm
Vehicle Speed Sensor 0.00 mph
Ignition Timing Advance #1 Cylinder 9.00 °
Intake Air Temperature 59.00 °F
Air Flow Rate Mass Air Flow Sensor 0.45 lb/min
Absolute Throttle Position 14.51 %
Time Since Engine Start 316 sec
Commanded EGR 0.00 %
Commanded Evaporative Purge 0.00 %
Fuel Level Input 77.25 %
# Warm-ups since DTC Cleared 2
Distance since DTC Cleared 16.78 mi
Barometric Pressure 29.61 inHg
Catalyst Temperature Bank 1 - Sensor 1 926.96 °F
Catalyst Temperature Bank 2 - Sensor 1 926.96 °F
Control Module Voltage 14.27 V
Absolute Load Value 18.43 %
Commanded Equivalence Ratio 1.00
Relative Throttle Position 1.18 %
Ambient Air Temperature 50.00 °F
Absolute Throttle Position B 17.25 %
Accelerator Pedal Position D 31.76 %
Accelerator Pedal Position E 20.39 %
Commanded Throttle Actuator 1.96 %
Monitor Information
Monitor Name Monitor Icon Status
MIL ON
Misfire Monitor Complete
Fuel System Monitor Complete
CCM Monitor Complete
Catalyst Monitor Not complete
Heated Catalyst Monitor Not Supported
EVAP Monitor Not complete
Secondary Air System Monitor Not Supported
O2 Sensor Monitor Complete
O2 Sensor Heater Monitor Complete
EGR Monitor Not complete
NMHC Monitor Not Supported
Nox Adsorber Monitor Not Supported
Boost Pressure System Monitor Not Supported
Exhaust Gas Sensor Monitor Not Supported
PM Filter Monitor Not Supported | s*****8
发帖数: 606 | 2 多数数据都是不相关的。
跟too lean有直接关系的是：
Short Term Fuel Trim - Bank 1 8.59 %
Long Term Fuel Trim - Bank 1 20.31 %
STFT是瞬时值，对于诊断没有意义。LTFT过高，表示run lean。这个指为0的时候最佳
，大于0为lean；小于0为rich。根据车型不同，一般来说大于20%就属于不正常。http://www.mitbbs.com/article_t/Automobile/32613481.html 楼主车问题就是LTFT too lean问题，回复中有可能的病症
还有一项Fuel Level Input，可能有关系，没google着这个正常值，所以也不好下结论
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