|P0422 code possible causes

Warm up Three means Catalytic converter deterioration or malfunctionExhaust mechanism leaksLoose former or rear HO2SsFaulty front heater O2 sensorO2 sensors harness is open or shortedO2 sensors negative electrical connection


You are watching: P0422 main catalyst efficiency below threshold bank 1

|How perform I deal with the P0422 code?

Check the "Possible Causes" provided above. Visually check the associated wiring harness and also connectors. Check for damaged components and look because that broken, bent, propelled out, or corroded connector"s pins.

|P0422 code tech notes

As the code description implies the P0422 code way that the vehicle"s control module has detected the the three-way catalytic converter is no working correctly (is not as efficient as the manufacturing facility is expecting). Instead of the oxygen (O2) sensors may sometimes resolve the code, however in most situations the catalytic convert needs come be changed to resolve the problem. If the P0422 password is combined with various other codes, shot fixing the various other codes first.

|Cost of diagnosing the P0422 code

Labor: 1.0

The cost of diagnosing the P0422 password is 1.0 hour that labor. The auto repair"s diagnosis time and also labor rates vary by location, vehicle"s make and also model, and also even her engine type. Most auto fix shops charge between $75 and $150 per hour.

|When is the P0422 password detected?

The P0422 password is set when the Engine manage Module (ECM) detects rear HO2S value distinction becomes closer to value of prior HO2S. The ECM monitors when vehicle speed is 25-60 MPH, fill is 22-45 percent and also engine rate is 1000-3000 RPM.

|P0422 password description

The Engine regulate Module (ECM) monitors the convert frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).A three means catalyst converter (Manifold) v high oxygen storage capacity will suggest a low switching frequency of boil oxygen sensor 2. Together oxygen storage volume decreases, the cook oxygen sensor 2 convert frequency will certainly increase.When the frequency ratio of heated oxygen sensors 1 and also 2 viewpoints a specified limit value, the three way catalyst malfunction is diagnosed.
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|Need more information through the P0422 code?

Need much more information on how to settle the P0422 code? Get access to Factory company Manuals

|Need help with a P0422 code?

get the P0422 password diagnosed by a professional: uncover a fix shop in your area


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|P0422 code comments

Help us improve snucongo.org. Leaving a comment listed below or tell united state if the information over helps you fix the code. What are the symptoms on your automobile for the P0422 code? have actually you replaced any kind of parts? any information is appreciated. Thanks