I have a 2008 Impala with a 3.5L v6 engine. I have a p2432 code for the secondary injection system. I have taken it to the dealer 2 times. 1 time I think they just cleared the code and the 2nd time they replaced the air pump. The code keeps comming back. Any answers? I would appreciate any help with this concern. The check engine light seems to come on more often when I am decelerating. It ususlly goes back off after a few days.
P2432 secondary air injector system pressure Sensor circuit low. Have you check the air control solenoid valve itself? Also look for obstruction. It is listed as number 1 in the fiqure.
try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you and also try www.schramauto.com or call them 1-800-292-1032 they only GM parts
the air pump should start when car is cold, if you do not hear a small airplane under your hood, than it is not functioning, if you do, you'll need to do other diagnosis (checking vaccum lines most likely), but being such a new car, a dealer would probably be under warranty.
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code p2432 refers to secondary air injection(AIR) system--air flow/pressure sensor bank 1---circuit low===causes wiring short to ground--air flow/pressure sensor
This code doesn't mean to replace the air pump ,
DTC P2430 : Secondary Air Injection (AIR) System Pressure Sensor Circuit
Circuit/System Description
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. An electric air pump, the secondary AIR injection pump, provides filtered air on demand to the AIR control solenoid valve/pressure sensor assembly. The AIR control solenoid valve/pressure sensor assembly controls the flow of air from the AIR pump to the exhaust manifold. The AIR solenoid relay supplies the current needed to operate the AIR control solenoid valve/pressure sensor assembly. A pressure sensor is used to monitor the air flow from the AIR pump. The engine control module (ECM) supplies the internal pressure sensor with a 5-volt reference, an electrical ground, and a signal circuit.
This is a pressure sensor problem . What this video on testing ! Chevrolet Malibu P2432 Secondary Air Injection System
What engine ? 3.8 or 5.3 L
DTC P0128: Engine Coolant Temperature (ECT) Below Thermostat Regulations Temperature
DTC P0411 : Secondary Air Injection (AIR) System Incorrect Air Flow Detected
DTC P2440 : Secondary Air Injection (AIR) Valve Stuck Open
DTC P2431 : Secondary Air Injection (AIR) System Pressure Sensor Performance
Circuit/System Description
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. An electric air pump, the secondary AIR injection pump, provides filtered air on demand to the AIR control solenoid valve/pressure sensor assembly. The AIR control solenoid valve/pressure sensor assembly controls the flow of air from the AIR pump to the exhaust manifold. The AIR solenoid valve relay supplies the current needed to operate the AIR solenoid valve/pressure sensor assembly. A pressure sensor is used to monitor the air flow from the AIR pump. The powertrain control module (PCM) supplies the internal pressure sensor with a 5-volt reference, an electrical ground, and a signal circuit.
The AIR diagnostic uses 3 phases to test the AIR system:
DTCs P0411 and P2430 run during Phase 1
DTCs P2430 and P2440 run during Phase 2
DTC P2444 runs during Phase 3
During phase 1, both the AIR pump and the solenoid valve are activated. Normal secondary air function occurs. Expected system pressure is 8-10 kPa above BARO.
During phase 2, only the AIR pump is activated. The solenoid valve is closed. Pressure sensor performance and solenoid valve deactivation are tested. Expected system pressure is 15-20 kPa above BARO.
During phase 3, neither the AIR pump nor the solenoid valve is activated. AIR pump deactivation is tested. Expected system pressure equals BARO.
In all 3 phases, testing is accomplished by comparing the measured pressure against the expected pressure. The PCM can detect faults in the AIR pump, AIR solenoid valve/pressure sensor assembly, and the exhaust check valve. The pressure sensor can also detect leaks and restrictions in the secondary AIR system plumbing.
P2432 secondary air injector system pressure Sensor circuit low. Have you check the air control solenoid valve itself? Also look for obstruction. It is listed as number 1 in the fiqure.
Basically this
means that an oxygen sensor in bank 1 detected a lean condition (too
much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is
the side of the engine that has cylinder #1. Note: This DTC is very
similar to P0174, and in fact your vehicle may show both codes at the
same time.
P0411 Secondary Air Injection System Incorrect Flow Detected, check
the...Combination valve
...Secondary Air Injection pump motor
...Secondary Air Injection solenoid valve I would take it to a mechanic
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