DTC P0052: Left Front Ho2S Heater Circuit High: Condition
PCM monitors control signal at terminal No. 94. If PCM turns on left front HO2S heater (grounds circuit) and voltage remains high, DTC is set. Causes may include the following:
- Faulty left front HO2S.
- Short to power in orange wire between left front HO2S harness connector terminal "B" and PCM harness connector terminal No. 94.
- Poor connection at left front HO2S harness connector or PCM harness connector terminal.
- PCM malfunction.