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I have 2001 dodge ram 1500 laramie 5.2l 4x4 and I'm getting a code p0037 and p0038 code replaced both o2 sensors And the pigtails as well on the wiring harness because they where looking alittle schored. Could a faulty fuel injector becauseing this or the exhaust manifold gaskets because i bought the truck a year ago and it looks like none of the injectors or exhaust manifold gaskets ever been replaced

Vehicle: 2001 dodge ram 1500 laramie 5.2l

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P0037 H02S Bank 1 sensor 2 Heater circuit malfunction

P0038 H02S Bank ! sensor 2 heater circuit high

Faulty fuel injector would not cause this code condition nor would a exhaust manifold gasket , If it was the exhaust manifold gasket you code a lean condition. with a rough idle. This is stricly with the H02S sensor, Circuit high code are disconnection condition of the sensor, You may have to open the harness covering to find the open circuit.

 Here a circuit high with a 02 sensor, this is a open heater circuit code. this was easy find as it was not along the harness.

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