P0420 - Catalyst System Efficiency Below Threshold (Bank 1) ByAdmin-January 05, 2025 The trouble code P0420 - Catalyst System Efficiency Below Threshold (Bank 1) is a common diagnostic code that vehicle owners may encounter when their check engine light illuminates. This code indicates an issue...
Note: You can clear the code (and the annoying MIL) by holding down the accelerator pedal for more than 10 seconds while in Diagnostic Test Mode II. When you release the pedal, the ECM erases the trouble code(s). Code Guide: A/T 1ST GR FNCTN………0731 A/T 2ND GR FNCTN……….....
P0421 Error Code: Warm Up Catalytic Converter (Bank 1) – Efficiency Below Threshold October 11, 2023 P0420 Error Code: Catalytic converter system – efficiency below threshold, bank 1 October 10, 2023 P0411 Error Code: Secondary air injection system – incorrect flow ...
FORD: DIAGNOSTIC TROUBLE CODE (DTC) P0217 WILL APPEAR ON VEHICLES WITH GAS DIRECT INJECTION AND A PINPOINT TEST FOR DTC P0217 HAS BEEN UPDATED IN WORKSHOP MANUAL (WSM). MODEL 2012-14 FOCUS. Read More » TSB #ASI-44686 Date Announced: AUG 01, 2014 NHTSA ID: #10056788 FORD: SOME...
EXHAUST SYSTEM DIAGNOSTIC TESTING TEMPERATURE DIFFERENTIAL TEST The conversion process produces heat. So, exhaust gases entering the converter should be cooler than the gases exiting the converter. The temperature differential test measures the surface temperature at the inlet and outlet bushings of the...
The inclusion of a rear view camera support and OBD 2 support enhances your driving safety and diagnostic capabilities. Whether you're a music enthusiast, a movie buff, or a tech-savvy driver, the JMCQ multimedia player is designed to deliver an enhanced audio and visual experience, making ...
The vehicle will also fail the test if (1) the test computer cannot establish communication with the vehicle PCM (defective or disabled diagnostic connector), (2) if the Malfunction Indicator Lamp (MIL) is on or inoperable, or if there are fault codes in the PCM. ...
When a fault is detected, the computer will store a diagnostic trouble code in its memory and illuminate the "Check Engine" light. On some vehicles, the computer can be put into a special diagnostic mode by grounding certain terminals on a diagnostic connector. This will cause the Check ...
EXHAUST SYSTEM DIAGNOSTIC TESTING TEMPERATURE DIFFERENTIAL TEST The conversion process produces heat. So, exhaust gases entering the converter should be cooler than the gases exiting the converter. The temperature differential test measures the surface temperature at the inlet and outlet bushings of the...