Seventh generation of Honda's compact car

52 个问题 查看全部

p0453 where is it on my civic 2002

i got a code p0453 on my civic 2002 , i am trying to fix it but i couldnot find it the evap , please help me find it

已回答! View the answer 我也有这个问题

这是一个好问题吗?

按维修分数 0
添加一条评论
传播 Fixmas 欢乐
Get $12 off your purchase of $50 or more with code FIXMAS12
传播 Fixmas 欢乐
Get $12 off your purchase of $50 or more with code FIXMAS12

1个答案

已选择的解决方案

mike, check on this first:"P0453 means the PCM (Powertrain Control Module) noticed the EVAP Pressure sensor or FTP is indicating a higher than normal pressure (above 4.5 Volts) in the EVAP system. NOTE: On some vehicles the FTP is a part of the fuel pump assembly in the tank. Potential Symptoms There will likely be no noticeable symptoms along with this code other than the MIL (Malfunction Indicator Lamp), commonly known as Check Engine Light illumination. However, there may be noticeable fuel odors in some cases. Causes A P0453 DTC trouble code may be caused by one or more of the following: Open on FTP sensor signal wire Short to voltage on FTP sensor signal wire Bad FTP sensor Abnormally high pressure in fuel tank due to blockage in EVAP purge hoses or overfilled tank Loose/damaged FTP sensor connector Loss of ground to the sensor Possible Solutions Using an scan tool access FTP sensor value with Key on Engine off (KOEO). Normal value is usually somewhere near 2.5 Volts at atmospheric pressure (may fluctuate some due to altitude). It shouldn't ever be above 4.5 Volts. 1) If it is close to 2.7V with the gas cap off, the problem is likely intermittent. Using a Digital Volt Ohm Meter, measure the voltage on the signal wire while trying to induce the problem by wiggle testing all the wiring at the FTP sensor. If the voltage fluctuates when wiggle testing, check for connector problems; i.e. water in the connector, broken or chafed wiring. 2) If the value shown on the scan tool is above 4.5V, unplug the sensor (if possible) and check for voltage again. If the high voltage is still present when unplugged, inspect wiring harness for a short to voltage on the signal wire. If the high voltage disappears when unplugging the sensor, check for a good ground to the sensor and proper reference voltage. If you have a good ground and 5 Volts reference voltage, replace the FTP sensor since it's likely shorted out." from here. Attached are the Vacuum hose routing diagram as well as the EVAP control Diagram. Hope this helps, good luck.

Block Image

Block Image

这个答案有帮助吗?

按维修分数 2
添加一条评论

添加你的答案

mike 将永远感激不已
浏览统计数据:

过去的24小时: 2

过去的7天: 21

过去的30天: 94

总计 4,253