The fault code shows two P0420s, one yellow and one red, both indicating the first bank. Is it the catalytic converter that's faulty or the oxygen sensor?

The check engine light is on for your 2010 Mazda3 hatchback, and the fault code indicates that the fuel trim system is too lean after the catalytic converter. Here's what you can do: 1. **Check for Vacuum Leaks**: Inspect hoses and connections for any leaks that might be causing the issue. 2. **Inspect the Oxygen Sensors**: A faulty oxygen sensor can lead to incorrect fuel mixture readings and should be checked. 3. **Examine the MAF Sensor**: The Mass Air Flow sensor might be dirty or malfunctioning, affecting the air-fuel ratio. 4. **Look at the Fuel System**: Check the fuel injectors and fuel pressure to ensure they are functioning properly. 5. **Check the Catalytic Converter**: Although less common, a failing catalytic converter can cause similar issues. 6. **Professional Diagnosis**: If you're unable to identify the problem, it may be best to consult a professional mechanic for a thorough diagnosis. Remember, addressing the issue promptly can prevent further engine damage.

For the 2011 Suzuki Liana, if you're getting a catalytic converter fault warning, there are a few things you can consider. First, you might want to confirm the diagnosis with another mechanic to ensure it's indeed the catalytic converter that's the issue. Sometimes, other components like oxygen sensors can also trigger similar warnings. If replacing the catalytic converter is necessary and the cost quoted is over two thousand, you might want to compare prices from different repair shops or consider aftermarket parts, which can sometimes be more affordable.

Is it necessary to replace the sensor if there's an oxygen sensor 2 circuit fault?

The fault code shows two P0420s, one yellow and one red, both indicating the first bank. Is it the catalytic converter that's faulty or the oxygen sensor?

The mechanic replaced the catalytic converter for me, but now the car lacks power when climbing and accelerating. Do I have to buy an original catalytic converter? The original one is quite expensive, over 5000.

The engine fault code flashes at idle and stays on when starting. The fault indicates a misfire in cylinder two. After replacing the ignition coil and spark plugs, and cleaning the injectors, the fault code disappeared but returned after two days. Do you know what might be causing this?

The check engine light on my Nissan Sunny came on, showing fault code P0705-00, which indicates an issue with the transmission range sensor A. The car suddenly jerked, and then the gear indicator on the dashboard disappeared. After turning off the engine and restarting, the gear indicator reappeared, but after a while, the check engine light came on again. I went to a repair shop to clear the fault code, and it seemed fine while driving, but the issue occurred again after some time. This has happened several times. Could it be a problem with the right tail light base?

Guys, can you help me figure out what I need to replace here? It's giving me a headache!!! "Jeep Liberty reports C121C Torque Request Signal Denied, first issue." "Crankshaft/Camshaft Timing Misalignment - Bank 1 Sensor 1 - Powertrain Control Module (PCM) fault code: P0016, this is the second issue." "Camshaft Position Sensor Circuit - Bank 1 Sensor 2 - Powertrain Control Module (PCM) fault code: P0365, this is the third issue." "Camshaft Position Sensor Intermittent - Bank 1 Sensor 2 - Powertrain Control Module (PCM) fault code: P0369." "Bank 1 Camshaft 2 Position Slow Response - Powertrain Control Module (PCM) fault code: P000B." "Torque Request Signal Denied - Anti-lock Braking System (ABS) fault code: C121C."

The engine warning light is on for my 2019 car, and the diagnostic says the catalytic converter is aging. What should I do? Do I need to replace it with a new one?

Hello fellow car enthusiasts! I bought my ZS at the end of 2019, and it has driven over 120,000 kilometers so far. Recently, it started showing a fault code indicating that the catalytic converter efficiency is below threshold. Has anyone else replaced their catalytic converter? What was your experience? Thanks!