What causes a p0411 code on an air pump?
Potential causes of a P0411 code include: Damaged or missing check valve AIR pump intake port plugged/damaged AIR pump clutch malfunction Holes or damage to exhaust components
What causes a p0412 secondary air injection system code?
If the PCM sees a voltage that isn’t what is expected, P0412 will set. Other secondary air injection system trouble codes include P0410, P0411, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, P0491, and P0492. Symptoms of a P0412 DTC may include: MIL (Malfunction indicator lamp) illumination Potential causes of a P0412 code include:
What do I need to know about DTC p0411?
DTC P0411 P0137 P2096 P0301 P2270 are all showing up. So far I have replaced the Down stream Oxygen sensor and the secondary air intake control valve. I am struggling with what to do next.
When to suspect a bad air pump relay?
If not, check for power and ground present at the AIR pump when jumpered. If there is no voltage/ground present at pump repair open in wiring harness. If voltage and ground is present, but pump still does not run, suspect a bad AIR pump. If after jumpering the AIR pump feed circuit the pump activates then the problem is likely the AIR pump relay.
What causes the p0411 OBD-II trouble code?
What causes the P0411 code? 1 Air injection pump has failed 2 Air control solenoids or air lines are faulty 3 Open or short in wiring harness for air injection system 4 Air injection system has excessive carbon buildup
What is the OBD code for secondary air injection?
P0411 code definition. The P0411 DTC is a generic OBD-II code that points to a malfunction within the secondary air injection system.
If not, check for power and ground present at the AIR pump when jumpered. If there is no voltage/ground present at pump repair open in wiring harness. If voltage and ground is present, but pump still does not run, suspect a bad AIR pump. If after jumpering the AIR pump feed circuit the pump activates then the problem is likely the AIR pump relay.
Why is the solenoid valve on my air pump not open?
If after jumpering the AIR pump feed circuit the pump activates then the problem is likely the AIR pump relay. Replace and retest. If the scan tool activates the AIR pump, with KOER (Key on engine running) activate the AIR pump solenoid valve on and see if there is vacuum to the cutoff valve. It should have vacuum present to open the valve.
If after jumpering the AIR pump feed circuit the pump activates then the problem is likely the AIR pump relay. Replace and retest. If the scan tool activates the AIR pump, with KOER (Key on engine running) activate the AIR pump solenoid valve on and see if there is vacuum to the cutoff valve. It should have vacuum present to open the valve.
Potential causes of a P0411 code include: Damaged or missing check valve AIR pump intake port plugged/damaged AIR pump clutch malfunction Holes or damage to exhaust components
DTC P0411 P0137 P2096 P0301 P2270 are all showing up. So far I have replaced the Down stream Oxygen sensor and the secondary air intake control valve. I am struggling with what to do next.
Why is the air pump stuck on DTC p2444?
The DTC P2444 Secondary Air Injection (AIR) Pump is Stuck ON diagnostic monitors the system pressure signal during test phase 3. When the PCM determines the AIR pressure sensor signal is higher than expected, DTC P2444 sets.
What is the diagnostic code for a Pontiac Grand Prix?
Diagnostic code P0411 pontiac check engine light 2008 v6-… My car has an automatic transmission. A code P0411 indicates a secondary air injection system incorrect flow has been detected. This is essentially a system of flushing clean and fresh air into the exhaust system in order to keep the catalytic converter working at its best.
What are the symptoms of a p0411 DTC?
Symptoms of a P0411 DTC may include: MIL (Malfunction Indicator Lamp) illumination Backfiring in the exhaust under hard acceleration Engine running rich (This is counter-intuitive. See explanation below) Squealing belt
Why do I get a p0411 code on my car?
P0411 Diagnostic theory for Shops and Technicians. When a code P0411 is set, the PCM is not seeing the front oxygen sensor voltage drop sufficiently when the Air Pump is supposed to be adding outside air in to the exhaust system to burn off the excessive HCs and CO that are created during the cold start of an engine.
Diagnostic code P0411 pontiac check engine light 2008 v6-… My car has an automatic transmission. A code P0411 indicates a secondary air injection system incorrect flow has been detected. This is essentially a system of flushing clean and fresh air into the exhaust system in order to keep the catalytic converter working at its best.
What is Pontiac check engine light code p1115?
P1114Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage – Read Our Article on Automotive Circuit TestingFor Help With This Pontiac Trouble Code P1115Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage – Read Our Article on Automotive Circuit TestingFor Help With This Pontiac Check Engine Light Code
What is the problem code for Pontiac check engine light?
P1113Intake Resonance Switchover Valve Circuit P1114Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage – Read Our Article on Automotive Circuit TestingFor Help With This Pontiac Trouble Code
What does fault code p0116 mean on a 1993 Saab 9-3?
What does the fault code P0116 mean on a 1993 Saab 9-3? This code indicates a fault with either the Saab thermostat or the coolant temperature sensor. The thermostat is the most likely cause. Connect a scan tool to the vehicle and compare the temperature it shows with that shown by a contact or infrared thermometer.
What causes the engine running hot warning on a Saab 9-3?
What would cause the ‘Engine running hot’ warning on a Saab 9-3 to come on after the heating system starts blowing cold air but then has run normal after the engine was allowed to cool? The symptoms described are that of a sticking Saab thermostat. While the problem may appear to have cured itself, it could happen again at any time.
Why is my thermostat sticking on my Saab 9-3?
To install a new thermostat reverse the above procedure. What would cause the ‘Engine running hot’ warning on a Saab 9-3 to come on after the heating system starts blowing cold air but then has run normal after the engine was allowed to cool? The symptoms described are that of a sticking Saab thermostat.
What does the code p0441 mean on a Saab 9-3?
P0441 is one of the more common OBD-II trouble codes with the Saab 9-3. It’s a generic powertrain code, which means regardless of what auto manufacturer built the vehicle, it’ll have the same meaning. P0441 indicates that there is an issue with the Evaporative Emissions System. It’ll often appear with P0455.
What does the fault code P0116 mean on a 1993 Saab 9-3? This code indicates a fault with either the Saab thermostat or the coolant temperature sensor. The thermostat is the most likely cause. Connect a scan tool to the vehicle and compare the temperature it shows with that shown by a contact or infrared thermometer.
What would cause the ‘Engine running hot’ warning on a Saab 9-3 to come on after the heating system starts blowing cold air but then has run normal after the engine was allowed to cool? The symptoms described are that of a sticking Saab thermostat. While the problem may appear to have cured itself, it could happen again at any time.
What causes a Saab 9-3 to fail an emissions test?
P0441 can cause the vehicle to fail an emissions test. Often, the only symptom of P0441 will be the service engine soon light itself. In a few cases there may be other symptoms. Here they are: Check Engine Light – Often, this is the only indication of a problem. Fuel Odor – The EVAP system deals with fuel vapor.
What causes a p0335 check engine light to misfire?
Symptoms may include: Vehicle may not start (see above) Vehicle may run rough or misfire A P0335 “check engine light” code could be caused by: Damaged CKP sensor connector Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway) Sensor output shorted to ground Sensor output shorted to voltage
What to do if air pump cutoff valve is not open?
If the scan tool activates the AIR pump, with KOER (Key on engine running) activate the AIR pump solenoid valve on and see if there is vacuum to the cutoff valve. It should have vacuum present to open the valve. If there is no vacuum present, check the AIR pump’s vacuum solenoid valve for vacuum supply from the manifold.
What happens if you unplug the mass air flow sensor?
Q: Car runs with the mass airflow sensor unplugged. If you plug it in it will die if the car is running. If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die. My car has 90000 miles. My car has an automatic transmission.