Guide To P2629 OBD Error Code Solutions

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The P2629 OBD code which has a less engine performance is usually known as the O2 sensor pumping current trim circuit/open. The main objective of the oxygen sensor is to calculate the oxygen content in the exhaust gases once they go out of the engine’s combustion process. It might be critical to the PCM’s capacity to preserve proper fuel economy. The error code P2629 will get stored if the sensor fails or if the information received from the sensor is found by the PCM.

If the error code is stored, the ECM will find a variation or 10 % or more than the expected voltage levels. The oxygen content that is available in the vehicle is found by the sensor which then sends voltage information to the ECM as it controls the fuel injection duration.

The air-fuel ratio must be 14:7 for proper engine function. The fuel delivery, timing of the ignition, and the fuel injector pulse will be controlled by the ECM. Also, multiple signals are received from various sensors to make sure that the fuel delivery and air/fuel ratio is correct. The heated oxygen sensor will find the oxygen level which is available in the exhaust system of the vehicle and calculates the lean or rich run of the engine. The oxygen sensor has a warmed heated with an electrical voltage so that it remains warm and the measurements can be taken more quickly than simply using the heat of the exhaust gases, which reduces the emissions and time length for the vehicle to reach a closed-loop mode.

If the engine runs in a closed loop or if the oxygen sensor stays constant for more than 8 seconds, then the P2628 error will get stored.

What causes this problem with the O2 Sensor Pumping Current Trim Circuit/Open B2S1?

• O2 sensor might be damaged.
• O2 sensor might have carbon buildup
• Possibilities for a blown fuse.
• Fuel pressure might be either too high or too low.
• Leaky vacuum on the engine.
• The exhaust leakage might be adequate.
• Connectors might be eroded or defective.
• Electrical wires might be broken or faulty.
• Failure of the PCM.

1. Powertrain Control Module - Overheating of the PCM can likely damage your PCM. Change it quickly by getting a new PCM from PartsAvatar.
2. Oxygen Sensor - The vehicle will function normally if the faulty oxygen sensor which shows poor gas mileage is replaced or fixed immediately.
3. Air Fuel Ratio Sensor - If you find a drop in the engine power output, then the air-fuel ratio sensor can be defective which has to be replaced immediately.
4. Engine Control Module - Any corrosion or break in the internal wiring harness can cause a short in your ECM. If you’re ECM is shorted, then you must change the engine control module (ECM) as soon as possible to avoid the P2629 error code.
5. Exhaust System - If there is a loud roaring noise in the vehicle, then it’s high time to replace the faulty exhaust system and get rid of the P2629 error code
6. Fuel Injector - Does your engine surge very often? Then it is an indication that the fuel injector is faulty and it must be replaced quickly.

Interested in knowing the symptoms to OBD code P2629? If yes, then you have arrived at the right place. We at PartsAvatar have listed out few common symptoms associated with this fuel injector problem.

Common Symptoms

• Flashing of the check engine light.
• The poor performance of the vehicle still continues.
• More fuel will be used by the vehicle.
• The vehicle will start running lean.
• Rich run by the engine.
• Smoke emerges from the tailpipe.

After understanding the symptoms and few common causes behind the OBD error code, we are here to help you out in understanding the ways and means to correct the issue. To solve any issue you need to follow certain steps, and to solve OBD error code P2629, you will need to undergo the following replacements:

• Replacement of the oxygen sensor.
• Secondly check for possible damages with the wires, connectors, and fuses which is linked to the oxygen sensor.
• Finally, reset every of the error code and start the vehicle again.

Apart from this, you might need to replace other damaged parts too like PCM, oxygen sensor, air-fuel ratio sensor, ohmmeter, ECM, exhaust system, fuel injector and more. You can easily find all these parts with us. Not only that you can get these parts shipped to your door free if your cart value happens to exceed $99.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2629 code to be stored:

• With the help of a scanner, the P2629 error must be diagnosed. A professional mechanic will carefully look at the freeze frame data from the scanner in order to look for the P2629 error and search for the additional trouble codes.
• The error code will then be reset and the mechanic will restart the vehicle, test drive the vehicle to a shorter distance and see if the error pops up.
• The P2629 error might have occurred by mistake if the error does not show up again, yet this problem might have raised due to a wiring issue.
• If the error still persists in the vehicle, the mechanic will search for the problem around the oxygen sensor.
• Defects around the wires, connectors, and fuses of the sensor must be checked.
• You will have to check more accurately if there is no problem with the oxygen sensor.
• If you find the oxygen sensor or its component to be faulty, you will have to replace them immediately. The error must be reset and the vehicle must be started again.

Common Mistakes When Diagnosing the P2629 Code

• There might be a leakage in the exhaust.
• Oxygen sensor might be defective.
• You might face some issue with wires.
• Defective PCM.