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P0412 valve a problem where is valve a located on a 2002 buick rendezvous

This is the electrically driven secondary air injection air pump. Please read all the information at the link before you buy or replace any parts. In most cases the entire air injection pump assembly must be replaced.
P0412 Secondary Air Injection System Switching Valve Circuit Malfunction

Jul 06, 2016 | 2002 Buick Rendezvous

1 Answer

Code P0412 shows on my 2007 Ion Saturn car. How do I fix it?

code p0412 refers to secondary air injection (AIR) solenoid A---circuit malfunction===causes wiring---air solenoid---ECM
replace the AIR solenoid.

Mar 13, 2015 | 2007 Saturn Ion

2 Answers

Check engine light po412

You can read about the P0412 code here:

Dec 30, 2014 | 1995 Lincoln Continental

2 Answers

4runner v8 what is dis code p0412 and how do i fix it.with pix pls.

I'm going to post the description from since it is a big paragraph. You will need a shop manual or else take it to a repair shop that has the equipment and book to check it out.

P0412 TOYOTA Description
An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.
The DTC P0412 is detected the the AIR vacuum control solenoid circuit not operating as desired by the PCM.
Read more:

Jul 04, 2013 | Cars & Trucks

1 Answer

Leaking exhaust flange

P0412 - Secondary Air Injection System Switching Valve 'A' Circuit Malfunction

Possible causes- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection

Oct 21, 2012 | Chevrolet Cars & Trucks

1 Answer


p0412 Secondary air injection switching valve A circuit
Right side of engine compartiment. ( underhood fuse block )
- Air pump fuse 50A- Air control valve relay- ignition1 fuse 10A ( positive for the relay )The secondary air injection pump relay is located near radiator surge tank.Left front of engine compartiment = Secondary air injection pump

Nov 15, 2011 | 2002 Cadillac Deville

1 Answer

P0036/p0136/p0171/p0412 are the codes that my 01 TT has and the engine light is on. What could the problem be?

The codes stand for the second lambda sensor and the secondary air injection solenoide. Check if you have 12V supply voltage at the lambda sensor.If you have it then probably the sensor is damaged, if you don't you have to check the fuses and wires.

May 16, 2011 | 2001 Audi TT

1 Answer


P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction

Possible Causes
  • Short to power or ground in the AIR command circuit.
  • Open in the AIR command circuit.
  • AIR bypass solenoid fault.
  • AIR relay fault.
  • Damaged PCM.
  • Oct 15, 2009 | Volkswagen Jetta Cars & Trucks

    2 Answers

    Code p0412 , what is the fix? 1995 mitsubishi eclipse with a dodge avenger 2.0 engine.

    P0412 Pulsed secondary air injection solenoid circuit, with seeing it and what it is doing i would guess replace the secondary air injection solenoid control valve.

    Jun 05, 2009 | 1995 Mitsubishi Eclipse

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