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Honda crv 2000 Real time awd have a white smoke on

Honda crv 2000 Real time awd have a white smoke on my tailpipe and a check engine with obd Code P0138. Replace the Engine head cover gasket due to some leak in the side of the cover then we replace the O2 sensor after the cat converter. And erase the code and the check engine light was gone but for an hour or two only Again we scan the check engine obd code reads P0138 and P0136 so we replace again the o2 sensor before the cat converter(as per advise of a car repair shop) we erase the codes again and it came back again after an hour. a little White smoke is still flowing out of my tailpipe while I'm on a stop while running none. what came we do to solve the problem. please Help.

Posted by Anonymous on

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  • Cars & Trucks Master
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That code does not say the sensor is bad. It says the circuit for the sensor is not right. It is bank 1, sensor 2. The code may be set because the sensor ground wire has a break, or the sensor's signal voltage wire is shorted to the 12 volt heater wire for that sensor. Look for corroded terminals or stretched pins at connectors. Check the harness wires for signs of melted wires, like where they run near hot exhaust parts.

Posted on Mar 30, 2017

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  • Cars & Trucks Master
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When the engine is cold place a piece of paper in front of exhaust pipe and see if that white smoke contains oil in it.
If it is oil it means a cracked block or worn rings in engine which means very expensive repair or replacement of engine.

If steam is coming out exhaust then water is escaping from the head gasket into the fuel chamber of the piston and is being ignited and turned into steam. A blown head gasket or worse a warped engine head may be the cause. A engine compression test would rule this out as a cause .

Posted on Mar 30, 2017

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Posted on Jan 02, 2017

emissionwiz
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SOURCE: code # P0141 and P0138

You said you changed the O2 sensors, which ones? I do believe that sensor 2 is the Catalyst efficiency monitor, it looks like an O2 but it's function is different. This sensor is behind the Catalytic converter, the O2 is in front. Bank one is the bank that # 1 cylinder is on, so the sensor that is defective is the 2nd sensor back on that sides exhaust pipe.

P0141 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 2

P0138 - Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 2

Posted on Nov 15, 2008

  • 599 Answers

SOURCE: BMW 740iL 1996 OBD fault codes p1036, p0156 or BMW 12 & 20

sorry but in this case the dealer is correct,ONLY oe cats will solve this problem, have worked on dozens of the cars no aftermarket cat i've seen has worked. you can chase this problem all over but it will still go back to the cats ,sorry no better answer

Posted on May 21, 2009

motor1258
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SOURCE: Intermittent P0136

Try some "Heet" or similar moisture remover for gas tank, just in case & see what happens. Good time of year for that.

Posted on Jun 05, 2009

  • 335 Answers

SOURCE: code p0138 for the second time

P0138 is code for o2 sensor Bank 1 Sensor 2. This sensor is the one behind the cat on the side of the engine that contains cylinder No 1.

Posted on Jun 15, 2009

  • 28 Answers

SOURCE: Code P0141. O2 Sensor heater circuit fault (Bank1,

It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.

Posted on Oct 12, 2009

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98 nissan maxima 3.0lt white smoke and smells like gas out the tailpipe and it is leaking gas out of tailpipe too.


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Smoke oil? For what your thinking that is oil? Smoke coming from the tailpipe is not good news, but does not necessarily mean the engine needs rebuilding. First, you need to determine what color of smoke is coming from the tailpipe
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I have a 1997 pontiac bonneville, it's running really rich (white smoke out of the tailpipe lightly) dies when it's at an idle. Changed the coil pack, no change.


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Black smoke means fuel runs rich (car getting to much gas). Check fuel pressure/air filter.
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