Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer JustAnswer is not responsible for Posts. 20+years, Nissan and Infiniti experience and currently now working for a Infiniti. Check engine light, runs rough, rough idle, loss of power, limp - Answered by a verified Infiniti Mechanic We use cookies to give you the best possible experience on our website. P0430 Mazda Catalyst Efficiency Monitor Malfunction Bank 2 □. P0430 Lincoln Catalyst System Efficiency Below Threshold Bank 2. P0430 Lexus Catalyst System Efficiency Below Threshold Bank 2 □. P0430 KIA Warm Up Catalyst Efficiency Below Threshold Bank 2 □. P0430 Jeep Catalyst Efficiency Bank 2 □. Infiniti QX80 Oxygen Sensor Helpful Automotive Resources P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) A failing catalytic converter breaks down less pollutants in the exhaust, resulting in lower oxygen (O2) levels overall. Note: This DTC is very similar to P0171 Infiniti, and in fact your vehicle. On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1. #INFINITI CROSSOVER CODE#What does this mean? OBD2 Code P0174 Infiniti definition: Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). Bank 1 P0430 TW Catalyst System, Bank 2 P0440 EVAP Small Leak P0443. While your Infiniti check engine light stays on, the vehicle may have increased emissions, decreased fuel economy, and performance issues. Infiniti check engine light may also be referred to as CEL or MIL. Both bad coils looked like that.Including models such as QX80, QX60, QX30, G37, G35, FX35, Q50 JX35. You can see on the bad coil where it is slightly melted and swollen next to the plug where the wiring harness connects. In the picture below, the bad coil is on the right and the new (Infiniti OEM) good coil on the left. In case anyone is interested, both bad coils physically looked bad. I called my local Infiniti dealer and they told me that it could be a number of things and that even if I fixed the issue I'd still need to bring it in for programing. P1093 is VVEL Actuator Motor Bank 2 and P0430 is Catalyst System Efficiency Below Threshold Bank 2. In turn, the computer activates the check engine light and logs code P0430. The downstream oxygen sensor detects the change and informs the vehicle’s computer. P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) A failing catalytic converter breaks down less pollutants in the exhaust, resulting in lower oxygen (O2) levels overall.
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