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Pickups Dodge Dakota Dodge Dakota Warning Lights and Trouble Codes
97 messages, Last post on Sep 29, 2009 at 4:17 AM
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My engine light came on and the code is P0161 and it went off within a week and came back on and remains on, a month later. Any ideas on where to find the malfunction and correct the problem?
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Replying to: dsweet (Mar 19, 2007 3:56 pm) O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2). Sensor 2 I think is the rear O2 sensor. I don't remember if Bank 2 is the right or left. Check to make sure that the connections are good and clean. If it persists, then the O2 sensor will probably have to be replaced. |
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hey dsweet, funny a friend and I were working on changing his Oxygen sensor on his Toyota Echo and I got into my 01 Dakota q/c the next morning and yes you guessed my ck engine light was on! anyways I had the same code as you. according to auto zone they told me it was the left cylinder side.Well they were wrong!Of course I had to figure this out after having already installing it .Good thing I still had the original. I reinstalled the orig on the left side. I purchased an(Haynes) repair manual and discovered it was infact the right cylinder side rather then the left.The manual states "downstream sensor heating circut problem right cylinder bank" this is the sensor just after the cat. Kinda hard remove very tight space for a wrench to get enough turn on the nut. Good luck in finding the sensor avail in store I had to order mine (Napa) $77.00! turns out since I had ordered the one for the left in error, the plug on it didnot match the right.Thus I had to cut the old plug from the right old sensor and spice it onto the new sensor what a mission but its done and the light is off... these sensors are a real pain anymore and a real expense!! the 4.7 has four of them you do the math  $ approx $ 70 apiece.. at approx 30,000 mile I had a similar problem and replaced all four and here I'm 60,000 mile replacing one again. I hope this not a every 30k occurance!! good luck!! btw you can read your trouble code by turning your ignition key 3x off on (donot start) and the trouble codes will appear in the odo....
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Replying to: slickwilliedj (Mar 29, 2007 9:35 pm) Something else might be going on with your Dakota. You are only the second one I know of that's had an O2 sensor failure on a 4.7, and the only one that's replaced all four! By any chance have you had any over charging problems with your truck? Best regards, Dusty
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Replying to: dustyk (Mar 31, 2007 5:14 am) fyi 01 q/c 60k 4.7
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Replying to: slickwilliedj (Apr 02, 2007 9:24 pm) If you ever get a chance, measure the terminal voltage after the vehicle has been driven for some time with minimal use of the accessories (lights, fan, etc.) and the engine running. Take note of the air temperature. Best regards, Dusty
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Replying to: dustyk (Apr 03, 2007 2:01 pm) I will ck the voltage though what should it read? wouldn't the volt gauge in the truck tell if I was overcharging though?
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Replying to: slickwilliedj (Apr 04, 2007 9:59 pm) When I stated "over charging," I meant that the charge rate was more than required to keep the battery at specific gravity. The voltage regulator could be causing an incremental increase in the charge rate, not enough to boil over a battery in a short time, but enough to overheat the plates and cause eventual warping as well as aggresive electrolyte evaporation. Unfortunately, the voltage gauge on the instrument panel is probably not accurate enough to be a reliable indicator to make a judgement on charge rate. However, the the Powertrain Control Module gets a signal from the battery temperature sensor mounted in the bottom of the battery tray. If that sensor's bad it may be falsely triggering a slight overcharge rate. This would be an item to check, for sure. The charge rate specifications are as follows: -20 F = 14.9 to 15.9 volts +80 F = 13.9 to 14.6 volts 140 F = 13.3 to 13.9 volts above 140 F = less than 13.9 volts NOTE: Temperature is ambient at the battery. NOTE: Voltage is measure at the battery terminals. Best regards,
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Replying to: dustyk (Apr 07, 2007 12:00 pm) |
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