Guide To P041F OBD Error Code Solutions

<<See All OBD Codes

The Secondary Air Injection System actively pumps out clean air into the Exhaust System during when the cooled engine is starting up. All that excess air helps with burning up the greatly enriched fuel emissions that are created while the engine is heating up.

The Secondary Air System normally acquires an Air Pump and a few tubes or plumbing passage to direct the airflow. In addition, the system obtains a solenoid and Check Valve(s) to master the airflow. As the engine control module (PCM) checks for a defect with the Secondary Air Injection System, the code P041F will be set.

What causes this problem with the Secondary Air Injection System Switching Valve "A" Circuit Low

• Illuminated MIL (Low indicator lamp)
• Enhanced tailpipe emissions
• Richly running Engine

1. Air Injection System - The air injection pump system is to help lower the emissions coming out the exhaust and can cause the vehicle to fail emission testing. The check engine light being on causes the vehicle to fail emission testing. The air injection pump should not cause any drive symptoms other than a Check Engine Light.
2. Powertrain Control Module - A damaged PCM could be unpredictable to a degree that your vehicle will have problems starting or idling when it’s running. You will begin visualize that emissions have shorted during when the car is running, emissions system control signals will begin failing, so with a malfunctioning PCM, make sure to have the vehicle inspected by a professional mechanic.
3. Engine Control Module - Your car might not start, especially after ensuring that the battery and starter are performing correctly. If your car's problems taper down to a defective engine control module, you should replace it as right away to stop whatever serious risks hinders the performance of your car.
4. Air Pump Control Valve - If the air pump check valve fails, it can significantly impact the tailpipe emissions of a vehicle. The air pump check valve works to reduce hydrocarbon and carbon monoxide emissions of a vehicle, so when it fails, the levels of these two pollutants will increase. If you suspect that your air pump check valve may be having a problem, or your Check Engine Light has come on, have the vehicle diagnosed by a professional technician, who will be able to determine if the vehicle needs an air pump check valve replacement, or if another repair needs to be made.

Our customers are everything to us, and that’s why we are geared to help you diagnose P041F code by discussing some critical symptoms below:

Common Symptoms

• Control circuit is shorted or grounded
• Control circuit is shorted or thrusting
• Control circuit opens when damaged or other
• Battery feed circuit to solenoid is shorted or opened

Common Mistakes When Diagnosing the P041F Code

• Blocked or disengaged vacuum hose
• Failed Powertrain Control Module (PCM)
• Failed Secondary air pump control valve
• Failed Secondary air pump
• Wiring Problem

Parts Avatar Canada is obliged solve all your problems associated to car parts. We have stocked a broad stretch of great prices for our Air Injection System, Powertrain Control Module, and Engine Control Module and Air pump control valve.

The exhaust gas recirculation (EGR) system is outlined to reduce temperatures of combustion and decreases oxides of nitrogen emissions (NOx). Step by step, exhaust gases are brought forth into the engine combustion chamber to cool down the flame ups. Certain vehicles use an EGR temperature sensor to make ascertain of the EGR procedure. The powertrain control module (PCM) makes use of this data for an appropriate EGR function.

In today’s diesel engines, it is essential to use an EGR cooler to decrease the exhaust gas temperature before it merges into the engine. The PCM depends on the EGR temperature sensors to examine the cooler’s system process. Basically, a single temperature sensor is situated on the exhaust manifold, and another is placed closely to the EGR valve.

The typical symptoms of a failing EGR temperature sensor also come up as pinging, increased emissions and a Check Engine Light illumination.

Locate the EGR temperature sensor

Cautiously and effectively take off your EGR temperature sensor by using this list of practical tools:

• Free repair manuals (optional)
• Protective gloves
• Safety glasses

The EGR temperature sensor is typically mounted in the exhaust manifold or mounted close to the EGR valve.

Remove the EGR temperature sensor

• Disengage the negative battery cable and set it aside.
• Remove the electrical connector by pushing down on the tab and sliding it off.
• Unscrew the sensor using a ratchet or wrench.
• Remove the sensor.

Install the new EGR temperature sensor

• Put in the new sensor. Mount the new sensor in position.
• Screw in the new sensor by hand and then tighten it down using a ratchet or wrench.
• Reinstall the electrical connector. Connect the electrical connector by sliding it into place.
• Reconnect the negative battery cable. Reconnect the negative battery cable and tighten it down.

You should now have a new EGR temperature sensor installed.

If you can attain a scan tool, with KOEO (Key on engine off) demand the AIR pump solenoid is set on and off. If ever the solenoid is not functioning, simply disconnect the solenoid and use a voltmeter, detecting for a voltage that is provided to the solenoid when demanded on and the ground appears to be good. It is best to supply a voltage and having a good ground check to ensure there is an effective linkage with the solenoid wiring harness connector. If there is a good connection, then it is good to have the solenoid replaced. If no voltage is supplied to the connector when there is a command to turn on the solenoid, then you must search for the AIR pump transmission and confirm that there is a battery-fused voltage that is displayed at the circuit’s reversed side, which is feeding electric volts to the AIR pump. If not the case, detect for a fuse that’s been blown up or a wiring that’s opened. Fix and reassess.

If there is an existing battery voltage situated at the voltage supplier side of the transfer, then the quickest way to check for a correct solenoid and AIR pump operation is using a bonded jumper and using your hands to activate it. Achieve this process by jumping a battery voltage to reversed AIR pump voltage consumption. Typically, this is called terminal 30 and 87 as a simplistic character diagram of the transfer, but not always. If the solenoid, even the AIR pump, functions correctly, then you're aware that your wiring is working fine and solenoid is ready to go. If activation doesn’t take place, have the wiring harness opened and search for the open or short within the voltage feeding to the AIR pump solenoid and get it repaired. If ever you’re jumping the solenoid towards the battery voltage and it energizes the solenoid, then it's time to detect for voltage available with KOEO on the PCM superintendent side of the transfer. If you don’t see anything, again fix the open or short in the circuit and re-examine.

To make a detection of the PCM wiring of the AIR pump solenoid, ground on the control circuit, which is typically functioned by the PCM, this way you will be informed if the wiring is not damaged. When grounding on the circuit at the PCM connector with KOEO, there should be activation to the AIR pump transfer, in turn, it be able to energize the AIR pump and solenoid. If this still can’t work, then search for an open or short in the PCM control circuit. If grounding on the control circuit is working the AIR pump and solenoid, confirm that the PCM has great ground routes and with no destruction to the connector or any water invasion. If all is check over, conclude there is an open driver within the PCM.