What does p0421 mean on a Saturn L300?
About P0421 code, this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according to specs).
What are the codes on a Saturn L300?
I have a saturn L300 sedan V6 with the codes P0421,P0431,P0171,P0174 all on. I have someone say that an engine temp control sensor might be the cause Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address. An expert that got 20 achievements.
What is the Check Engine Light code for Saturn?
P1272Accelerator Pedal Position Sensor 2 P1273Accelerator Pedal Position Sensor 1 P1274Injectors Wired Incorrectly P1275Accelerator Pedal Position (APP) Sensor 1 Circuit – Read Our Article on Automotive Circuit TestingFor Help With This Saturn Check Engine Light Code P1276Accelerator Pedal Position (APP) Sensor 1 Performance
What can I do about the p0431 trouble code?
P03… Changed all 4 O2 sensors (generic Bosh), still get the same P0431 after resetting codes and 2 days of driving, engine light comes back on, also I get the code twice, code 1 is P0431 and code 2 is P0431, what else can I do?????? exhaust does not smell like rotten eggs and I dont think there is an ex…
About P0421 code, this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according to specs).
What does a code p0431 in OBD mean?
A code P0431 may mean that one or more of the following has happened: The catalytic converter is no longer functioning properly An oxygen sensor is not reading (functioning) properly Inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2.
I have a saturn L300 sedan V6 with the codes P0421,P0431,P0171,P0174 all on. I have someone say that an engine temp control sensor might be the cause Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address. An expert that got 20 achievements.
P1272Accelerator Pedal Position Sensor 2 P1273Accelerator Pedal Position Sensor 1 P1274Injectors Wired Incorrectly P1275Accelerator Pedal Position (APP) Sensor 1 Circuit – Read Our Article on Automotive Circuit TestingFor Help With This Saturn Check Engine Light Code P1276Accelerator Pedal Position (APP) Sensor 1 Performance
Can a bad catalytic converter lead to engine failure?
A bad or clogged catalytic converter can ultimately lead to engine failure, so it’s important to address the issue promptly. However, having catalytic converter problems doesn’t necessarily mean that the converter has to be replaced.
Can a lazy oxygen sensor cause a catalytic converter problem?
You may need to fix other engine problems in order to solve your catalytic converter problem. A lazy oxygen sensor might falsely indicate a catalytic converter problem, yet not set a DTC for itself. A technician can determine if the sensor is responding as it should.
What does error code p0421 mean on catalytic converter?
Error Code P0421 is described as Warm Up Catalyst Efficiency Below Threshold (Bank 1). This means the Catalytic Converter’s Oxygen Sensor Downstream has detected that the Bank 1 converter is not working properly.
What does p0421 mean in Powertrain Control Module?
The P0421 code means that the powertrain control module is noticing that the catalyst system is not performing as it should during warm up conditions.
What to do if your OBD scanner says P0420?
Replacing your catalytic converter can ensure efficient operation of your car’s exhaust system. You may also have to replace the oxygen sensor. After you’ve replaced or repaired these two components, check your OBD-II scanner again to ensure you’ve completely solved the OBD-II scanner error code P0420 or P0421 problem.
What does the p0421 code on the Check Engine light mean?
What the P0421 code means. The powertrain control module uses data received from the upstream and downstream oxygen sensors and compares the two readings given. If the two readings are identical, or very close to each other in value, the Check Engine Light will be illuminated and a P0421 code will be stored.