What does OBDII mean for Honda Pilot P0420?
P0420 is a OBDII trouble code. The code technically stands for: Catalyst System Efficiency Below Threshold Your Pilot has at least two oxygen sensors, one before and after the catalytic converter. Among the many jobs that oxygen sensors have is they have to measure the emissions levels coming in and out of the converter.
What does P0420 mean on a catalytic converter?
Here’s the official definition of a P0420 trouble code: P0420 Catalyst System Efficiency Below Threshold (Bank 1). What the code is telling you is that the catalytic converter has failed an efficiency test. In 99.5% of the cases, this code means that the catalytic converter itself is bad and must be replaced.
What causes P0420 in a VW Beetle?
When the fuel mixture is rich, the exhaust the O2 sensors see will be out of range and it could throw the sensor. Often, the oxygen sensor is the cause of P0420. Specifically it’ll usually be the O2 sensor (s) on the upstream side of the catalytic converter.
What are the symptoms of a code P0420?
Here are the typical symptoms that something is wrong when you have code P0420. Mileage- May or may not suffer depending on how much the catalytic converter is clogged. Loss of Power – It is a really strange feeling to drive a vehicle with a catalytic converter that is going out. Typically, they’ll idle ok and drive normal under a light load.
What causes a P0420 code?
The code P0420 can be caused by an engine problem that’s pouring too much fuel into the catalytic converter, excess fuel that the PCM can’t control, a vacuum leak that’s causing excess air to enter the catalytic converter, OR, a damaged catalytic converter.
What exactly is code P0420?
The definition of the OBD-II P0420 code is ” Catalyst System Efficiency Below Threshold (Bank 1) “. When the ECU stores this code, it means that the catalytic converter is not operating at maximum efficiency and may need replacement. Car fault code: P0420
What is check engine code P0420?
In short, engine code p0420 means Catalyst System Efficiency Below Threshold. If your catalyst system isn’t functioning in a proper manner, the ‘Check Engine’ light may be triggered.
What does the engine error code P0420 mean?
A P0420 Code means that the engine control unit recognizes that the catalytic converter’s efficiency is below the threshold. The ECM uses two O2 sensors, one in the front and one in the back of the catalytic converter, to measure the efficiency. If the efficiency is low, the P0420 code will be triggered. In most cases, a P0420 code is caused by a bad catalytic converter .