Mechanics

ERROR CODES

2002 Dodge Dakota • 980,000 miles

2002 dodge dakota check engine light on codes say it issomething wrong with evap and upstream o2 sensor internal fault how do I start to fix these prblems?
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Mustangxxx
August 8, 2012.




For leaks in the evaporative emission system, it depends on the code. For big leaks, look for hoses disconnected, loose gas cap, etc. For small leaks you really need a smoke machine. That allows you to inject white non-toxic smoke at 2 psi, then you search for where it's sneaking out.

There are a lot of oxygen sensor codes. The course of action depends on which code and for which sensor.

Caradiodoc
Aug 9, 2012.
O2 sensor code is po141 1/2 heater permformance? Is this the rear o2 sensor bank one sensor 2?
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Tiny
Mustangxxx
Aug 9, 2012.
P0141 – Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

That would be the driver's side, downstream sensor, (after the mini catalytic converter). If this truck does not have the California emissions package, it will only have two O2 sensors, not 4.

Caradiodoc
Aug 9, 2012.

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