What does the Harley P0051 fault code mean?

1 Answers
LaGabrielle
07/25/25 3:51pm
Harley P0051 fault code indicates a damaged oxygen sensor, which requires timely inspection and replacement. Introduction to the oxygen sensor: In simple terms, an oxygen sensor is a sealed container (made of metal or plastic) containing two electrodes. The cathode is a piece of PTFE (polytetrafluoroethylene) coated with an active catalyst, and the anode is a lead block. This sealed container has only one capillary micro-hole at the top, allowing oxygen to pass through and reach the working electrode. Chemical principle of the oxygen sensor: When oxygen reaches the working electrode, it is immediately reduced, releasing hydroxide ions. These hydroxide ions pass through the electrolyte to the anode (lead), where they undergo an oxidation reaction with the lead, forming the corresponding metal oxide.
Was this review help?
14
4
Share
More Forum Discussions

Does the Trumpchi GS8 have a four-wheel drive version?

Trumpchi GS8 does have a four-wheel drive version, which is equipped with an on-demand four-wheel drive system. The Trumpchi GS8 is a mid-size SUV with dimensions of 4810 mm in length, 1910 mm in width, and 1770 mm in height, and a wheelbase of 2800 mm. The front suspension of the GS8 uses a MacPherson independent suspension, while the rear suspension employs a multi-link independent suspension. The new model of the Trumpchi GS8 is powered by a 2.0-liter turbocharged engine, which delivers a maximum power of 185 kW and a maximum torque of 390 Nm. The engine reaches its peak power at 5250 rpm and its maximum torque between 1750 to 4000 rpm. It is paired with a 6-speed automatic transmission.
6
5
Share

Can Snow Corrode Car Paint?

Snow can corrode car paint. Below is an introduction to relevant car maintenance content: 1. Air Filter: During operation, the engine inhales a large amount of air. If the air is not filtered, the dust in it can accelerate the wear of the piston group and cylinder. Larger particles entering between the piston and cylinder can also cause severe "cylinder scoring." The function of the air filter is to remove dust and particles from the air, ensuring that sufficient and clean air enters the cylinder. 2. Fuel Filter: The fuel filter provides clean fuel to the engine by filtering out water and impurities from the gasoline. This optimizes engine performance and offers the best protection for the engine. During car maintenance, technicians will perform additional checks based on the vehicle's specific conditions and may include other maintenance tasks, such as inspection and cleaning of engine-related systems, tire alignment checks, inspection of various fastening components, etc.
16
2
Share

What is the reason why the Buick LaCrosse cannot shift gears?

The reasons why the Buick LaCrosse suddenly cannot shift gears are as follows: 1. Gear lock engaged: It may be due to the gear lock being engaged. Some automatic transmission vehicles are equipped with a gear lock switch, mainly used to force gear shifting when the car has no power or to prevent the car from rolling. It is possible that this switch was accidentally touched, causing the gear to be locked. You can find the "shift-lock" button near the gear shift lever to unlock it. 2. Battery drained: A drained car battery can also prevent gear shifting. Check if the lights and dashboard are still functioning normally. If they are not working properly, it indicates that the car battery is drained, and simply recharging the battery will solve the problem. 3. Disrupted vehicle computer: A temporary disruption in the vehicle computer may occur. Try restarting the vehicle to see if gear shifting can be restored. A broken shift cable can also prevent the car from shifting gears, and replacing the shift cable will resolve the issue.
7
3
Share

How to Restore Broken Glass?

If the damage area of the car glass is small and the damage type is star-shaped, mixed, or bullseye-shaped, you can purchase glass repair tools online or offline to repair it yourself. If the damage area of the car glass is large, for safety reasons, the glass must be replaced directly. Steps for self-repairing car glass damage with glass repair tools: 1. Clean the area of the car glass that needs repair to avoid debris. 2. Align the bracket in the glass repair tool with the damaged area and drop 3-5 drops of repair liquid inside. 3. Use a syringe to extract the air from the damaged area to create a vacuum environment and wait for about 20 minutes. 4. Press the syringe downward on the bracket to completely squeeze the repair liquid into the cracks of the broken glass and maintain for about 15 minutes. 5. Remove the bracket and syringe, apply the curing film, then use a blade to squeeze out the bubbles inside and expose the vehicle to sunlight for about 20 minutes. 6. Remove the curing film and clean any residual adhesive.
9
3
Share

How to Start a Power-Assisted Bicycle?

To start a power-assisted bicycle, you need to engage the brake. First, turn on the key, then squeeze the brake. Below is some relevant information about power-assisted bicycles: 1. Composition: A power-assisted bicycle includes a frame, front wheel, rear wheel, a bottom bracket at the lower end of the frame, and an engine. The frame of the power-assisted bicycle is composed of interconnected hollow tubes, which contain fuel oil inside. 2. Classification: Fuel-powered bicycles are mainly divided into two types: one is a two-stroke scooter that resembles an electric motorcycle in appearance, and the other is a single-cylinder four-stroke fuel-powered bicycle. 3. Precautions: Beginners should use low gears, maintain a safe distance from vehicles in front, behind, and to the sides when on the road. To slow down, you can release the throttle, use the front and rear brakes, and control the clutch.
7
1
Share

What are the reasons for the heavy steering wheel of the Buick LaCrosse?

The reasons for the heavy steering wheel of the Buick LaCrosse are as follows: 1. Insufficient power steering fluid: Power steering fluid is a medium oil used in the car's power steering pump, which serves to transmit steering force and provide cushioning. The power steering fluid needs to be replaced regularly, and any leaks should be checked. When the power steering fluid is insufficient, the steering will feel heavy and stiff. 2. Low tire pressure: Low tire pressure increases the contact area between the tires and the road surface, leading to greater friction and making steering more difficult, resulting in a heavy steering wheel, which is not conducive to driving safety. 3. Steering gear or power steering pump failure: The steering gear and power steering pump are also critical components affecting car steering. Any malfunction in these two important parts can cause steering difficulties. Issues such as universal joints, chassis suspension stabilizer bars, or plain bearings should not be overlooked.
8
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.