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A PO420 trouble code indicates a problem with the catalytic converter's efficiency in a 2002 Suburban. To fix it, first, inspect the exhaust system for leaks, check the oxygen sensors for proper function, and ensure that the catalytic converter is not clogged or damaged. If the sensors and exhaust are fine, consider replacing the catalytic converter. Additionally, clear the code and take the vehicle for a test drive to see if the code returns.
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What is a PO420 in a 2002 Mercury Cougar?
What is a PO420 in a 2002 mercury cougar: Now if your car is 2.0L DOHC. OBD ll PO420 : Catalyst Efficiency Below Threshold (BANK 1). Hope this helps...
What is code P1574 on 2002 Chevy Suburban?
Trouble code P1574 means: EBTCM System/Stop Lamp Circuit Voltage High
What size engine does the 2002 Chevrolet Suburban have?
The 2002 Chevrolet Suburban has a V8 engine.
How many valves does the 2002 Chevrolet Suburban have?
The 2002 Chevrolet Suburban has 16 valves.
What does the code mean P0171 code 2002 5.3 suburban?
Trouble code P0171 means: Fuel Trim System Lean (Bank 1
What is the recommended coolant for 2002 Chevy Suburban?
What type of coolant is recommended for a 2002 chevy suburban
What is the cam type of the 2002 Chevrolet Suburban?
The 2002 Chevrolet Suburban has overhead valves (OHV).
Is the 2002 Chevrolet Suburban electric or gas?
The 2002 Chevrolet Suburban is a gas-powered vehicle.
What kind of transmission does the 2002 Chevrolet Suburban have?
The 2002 Chevrolet Suburban has a 4-speed automatic.
What is the angle of departure of the 2002 Chevrolet Suburban?
The 2002 Chevrolet Suburban has a 22 degrees angle of departure.
How tall is the 2002 Chevrolet Suburban?
The height of the 2002 Chevrolet Suburban is 6 ft. 3.6 in. (75.6 in.).
What is the angle of approach of the 2002 Chevrolet Suburban?
The 2002 Chevrolet Suburban has a 25 degrees angle of approach.
