What does the code p0171 mean on a Honda Accord?

Accord P0171 Code Defined. P0171 is an OBDII trouble code. The code technically stands for: Fuel Trim System Lean Bank 1. The code is thrown when the oxygen sensors detect that there’s not enough oxygen in the exhaust system. This is commonly referred to as a “lean” condition.

What does code p0171-system too lean mean?

Code P0171 – System Too Lean: Symptoms, causes, common problems, diagnostic. The OBDII trouble code P0171 – System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel.

What is the OBDII code for a Honda Accord?

One of the most common trouble codes with the Honda Accord is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common. P0171: Fuel Trim System Lean Bank 1. Accord P0171 Code Defined

What causes the p0171 code on a Ford TSB?

Another Ford TSB for a number of late 90-s Ford vehicles describes a problem with MAF sensor contamination where both codes, P0171 and P0174 would appear together. Problems with the mass air flow (MAF) sensor causing the code P0171 are fairly common in many vehicles.

What does p0170 mean on Honda fuel trim bank?

In writing this article I’ve added Mercedes-Benz-specific info since it seems that M-B (and VW) are most prone to having this P0170 Honda surface along with misfire codes or other fuel trim codes. P0170 Honda means there was a malfunction in the computer’s control of the air:fuel ratio.

When to use p0170 or p0173 fault codes?

It appears to me that the PCM (powertrain control module) logic used by some European car manufacturers to set a P0170 (or P0173) fault code simply isn’t used by American vehicle manufacturers. It is more common to see P0171, 0174, 0172, 0175 codes set with regard to fuel trim malfunctions on American cars.

Is there a misfire code for Honda p0170?

This code is one that surfaces with certain makes of automobiles more than others. In writing this article I’ve added Mercedes-Benz-specific info since it seems that M-B (and VW) are most prone to having this P0170 Honda surface along with misfire codes or other fuel trim codes.

What causes a Honda Accord to misfire at idle?

Misfire – If the air fuel mixture has gotten too far from factory specs, this can cause the Accord to misfire. Idle Issues – With the air/fuel mixture altered, the vehicle can idle erratically as the computer compensates to keep the engine running.

What causes a Honda Accord to go off the road?

P0171 HONDA Possible Causes. Intake air leaks. Faulty front heated oxygen sensor. Ignition misfiring. Faulty fuel injectors. Exhaust gas leaks. Incorrect fuel pressure. Lack of fuel.

What are the symptoms of check engine light p0171?

What Are The Symptoms Of P0171? 1 Check Engine Light is on 2 Lack of power from the engine 3 Rough idle 4 Engine coughing 5 Engine misfiring

When to use lean condition code p0171?

Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition exists and code P0171 is triggered.

What causes the code p0171 on 2002 Toyota Corolla?

Q: What could cause the code P0171 on 2002 Toyota Corolla? A: In the 2002 Corolla, the code P0171 is often caused by a bad or dirty mass airflow sensor or vacuum leaks. Your mechanic can check for vacuum leaks and test the mass airflow sensor with a scan tool.

How to repair the p0171 Honda fuel injection system?

How is the P0171 HONDA code repair? Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

What to do if your air filter is p0171?

Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter.

When does the front O2 sensor Register p0171?

P0171 is triggered when the front O2 sensors recognize a lean mixture. It can both be a short-term lean mixture or a long-term lean mixture. If it’s a short-term lean mixture the fuel mixture is often very lean. If it’s a long-term mixture, it can register the code because of a small notice of lean mixture over time.

What does the odb2 code p0171 mean?

P0171 is a very common code for any ODB2 vehicle. What does this code mean anyway? The definition for this this P0171 code is Fuel Trim System Lean (Bank 1) . I have have been dealing with this P0171 diagnostic trouble code for many years on many different year make and model vehicles.

What causes a lean mixture on the p0171 code?

Intake leaks are a widespread problem when it comes to the P0171 code. Intake/Vacuum/boost pipe leaks can trick the MAF sensor and cause a lean mixture. The MAF sensor measures all air that is going into the engine and telling the engine control unit which amount of air it is.

What is the trouble code on a Honda Accord?

One of the most common trouble codes with the Honda Accord is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner.

What does the p1259 code on a Honda mean?

If there is a disparity between oil pressure condition in the hydraulic circuit that is determined by the PCM command, and the oil pressure condition that is determined by the status of the VTEC oil pressure switch, the system is considered faulty and the P1259 code is stored. Need more information on how to fix the P1259 HONDA code?

What does it mean when your Honda Accord says p1259?

P1259 specifically means that there is an issue with the VTEC circuit itself. Although, mechanical issues can cause the code to register as well. If you are unsure of the oil weight used in your Accord’s last oil change, this would be a great place to start.

What does p0171 mean on a Honda Accord?

When these adjustments become too large, code P0171 is triggered. Vacuum leaks – PCV hose, vacuum hoses, intake manifold gasket. It is okay to drive your Honda with P0171 for a short period of time, but driving with this code for an extended period of time can overheat the engine and cause internal engine damage.

One of the most common trouble codes with the Honda Accord is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner.

What to look for on a Honda Civic p1259?

Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. What does this mean? The cost to diagnose the P1259 HONDA code is 1.0 hour of labor.

What causes Honda Civic to have a p1457 fault code?

This fault code is very common on Honda Accord, Civic, Odyssey, CR-V vehicles. Honda P1457 code is usually caused by the vent valve on the charcoal canister located under the car near the fuel tank. If the EVAP system fails the self-test at least twice, it will turn on the check engine light (also known as CEL or MIL).

What is the fault code on a Honda?

It appears to me that the PCM (powertrain control module) logic used by some European car manufacturers to set a P0170 Honda (or P0173 Honda) fault code simply isn’t used by American vehicle manufacturers. It is more common to see P0171 Honda, 0174, 0172, 0175 codes set with regard to fuel trim malfunctions on American cars.

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