It basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2)....
I am getting DTCs as follows: P0171-System to lean, Bank 1, freeze frame; P0174-System to lean, Bank 2; P0141-02 Heater Circuit, Bank 1, Sensor 2; and P0161-02 Heater Circuit, Bank 2, Sensor 2. Could these 4 codes all be related to the same problem? If so, what could .....
A trouble code P0135: O2 Bank 1 Sensor 1 Heater Circuit Performance is not hard to diagnose when it pops up and lights up the check engine light (CEL) on your 97, 98, or 99 Dodge or Plymouth Neon. In this tutorial, I'll show you how to test the upstream oxygen (O2) sensor's ...
Oxygen (O2) or A/F ratio sensor or sensor heater malfunction Open or short in O2 sensor circuit (wiring, harness) Fuel pressure or fuel injector problem Faulty PCM Intake air or engine vacuum leaks Faulty fuel injector(s) Fuel pressure too high or too low PCV system leak/fault A/F ...