What does the p0171 code on a Chevrolet mean?

P0171 CHEVROLET Tech Notes 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. If the problem persists the front oxygen (O2) sensor may need to be replaced.

What causes a p0171 fuel trim system Lean Bank 1?

If the problem persists the front oxygen (O2) sensor may need to be replaced. The P0171 code could also be caused may be caused by one or more of the following: debris on the MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure, or Engine Control Temperature (ECT) Sensor reading inaccurate.

What is the trouble code on a Chevy Malibu?

One of the most common trouble codes with the Chevy Malibu 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. P0171 is an OBDII trouble code.

What causes the p0171 code on the MAF sensor?

The P0171 code could also be caused may be caused by one or more of the following: debris on the MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure, or Engine Control Temperature (ECT) Sensor reading inaccurate.

What does p0174 mean on a bank 2 engine?

Basically this P0174 code means that the upstream oxygen sensor in bank 2 reporting a lean condition (too much oxygen in the exhaust). On V6/V8/V10/V12 engines, Bank 2 is the side of the engine that doesn’t have cylinder #1.

What are the trouble codes for Chevy Suburban?

Please try again later. The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1 and 2) a P0101 (MAF circuit out of range) and a P0300 (engine misfire detected). All of these were related to one single problem.

What does the code p0174 on the ECM mean?

What the P0174 code means. Code P0174 indicates that there is a lean condition detected by the Engine Control Module (ECM).

What causes the p0174 code on a Chevy?

The P0174 code could also be caused may be caused by one or more of the following: debris on the MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure, or Engine Control Temperature (ECT) Sensor reading inaccurate. The cost to diagnose the P0174 CHEVROLET code is 1.0 hour of labor.

What are the trouble codes on a Chevy Silverado?

Chevy Silverado P0171 and P0174 Trouble Codes. Two of the most common trouble codes with the Chevy Silverado are P0174 and P0171. Both of these codes reference a number that is given to you when you plug your truck into a OBDII scanner.

Is it okay to drive a Chevrolet with p0171?

It is okay to drive your Chevrolet 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. It is important to complete the entire diagnostic process when diagnosing P0171.

When does AutoZone send an error code p0171?

The optimal ratio is 14.7:1 (air:fuel). When your powertrain/engine control module receives a reading that indicates there’s too much oxygen and the ratio is incorrect, it sends an error code P0171 or P0174. Depending on the problem, it may send both codes if the issue is causing a lean condition on both engine banks.

What is the definition of p0171 fuel trim system Lean?

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. Everyone always asks me is “what is the fix for this P0171 lean code?” Everyone thinks there is one fix for all.

What causes a p0171 Bank 1 lean condition?

Most likely possible causes for this P0171 bank one lean condition per manufacture. Ford, Lincoln and Mercury cars and trucks: Air or vacuum leak, Oxygen Sensor or Mass Air Flow Sensor.

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 does p0171 stand for on a Chevy Silverado?

The code is often accompanied by the P0174 code, which is for bank 2. You should read this article if you are experiencing both of these trouble codes: P0171 and P174 Chevy Silverado. P0171 is an OBDII trouble code. The code technically stands for:

What to do if check engine light code p0171 is triggered?

If check engine light code P0171 is triggered again, check the rest of the vacuum lines for leaks and continue to the rest of the diagnostic process. Remove the mass air flow sensor and clean the sensor using mass air flow cleaner or contact cleaner.

If the problem persists the front oxygen (O2) sensor may need to be replaced. The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate.

Where are the spark plugs on p0171 DTC?

Bank 1: Now, to be a little more specific, P0171 DTC tells you that bank 1 is the one having the issue. Bank 1 is the engine bank that holds the spark plugs for cylinders 1, 3, and 5 (V6 4.3L). Cylinders 1, 3, 5, and 7 (V8 5.0L, 5.7L). This bank is the one on the driver side of the engine.

How to check for vacuum leaks ( 1999-2006 V8 Silverado )?

You can find this tutorial in Spanish here: Como Encontrar Fugas De Vacío (1999-2006 V8 Silverado, Sierra, Suburban, Tahoe, Yukon) (at: autotecnico-online.com ). What Is A Vacuum Leak? In plain English, a “vacuum leak” refers to air entering the engine at any point after the mass air flow (MAF) sensor.

What is the trouble code on my Chevy Silverado?

P0171 Chevy Silverado. July 11, 2018July 10, 2018. One of the most common trouble codes with the Chevy Silverado is the P0171 code. This code number references a number that is given to you when you plug your truck into a OBDII scanner. The code is often accompanied by the P0174 code, which is for bank 2.

What causes trouble code p0174 on a Chevy Silverado?

There are many things that can cause these trouble codes on the Chevy Silverado. The most common problem is far and away the intake manifold getting a vaccum leak. Vacuum Leaks – With the Chevy Silverado, the most common cause for the P0174 or P0171 code to show is a vacuum leak.

What does p0174 mean on a Ford F150?

P0174- Fuel Trim System Lean → Bank 2: P0174 indicates that the side of the engine with the first cylinder (Bank 2) is running lean. On inline engines, this code is not available, since there is only one “bank” of cylinders.

What does p0171 system too lean Bank 1 mean?

P0171 System Too Lean Bank 1 Technical Description. System Too Lean (Bank 1) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

What are the symptoms of a p0171 leak?

What Is The Cause Of P0171? 1 Dirty or faulty mass airflow sensor 2 Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket. 3 Weak fuel pump 4 Clogged or dirty fuel injectors 5 Clogged fuel filter 6 Exhaust leak 7 Faulty oxygen sensor 8 Faulty air-fuel ratio sensor

What does the p0171 code in front oxygen sensor mean?

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. If the problem persists the front oxygen (O2) sensor may need to be replaced.

What are the causes of a Chevrolet p0171?

Chevrolet P0171 Causes 1 Dirty or faulty mass air flow sensor 2 Vacuum leaks – PCV hose, vacuum hoses, intake manifold gasket. 3 Weak fuel pump 4 Clogged or dirty fuel injectors 5 Exhaust leak 6 Faulty oxygen sensor

Where are the spark plugs on a p0171?

Cylinders 1, 3, 5, and 7 (V8 5.0L, 5.7L). This bank is the one on the driver side of the engine. Bank 2: A P0174 DTC tells you that bank 2 is the one having the issue. Bank 2 is the engine bank that holds the spark plugs for cylinders 2, 4, and 6 (V6 4.3L). Cylinders 2, 4, 6 and 8 (V8 5.0L, 5.7L).

The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate. There is a factory service bulletin for the following Chevrolet models: 2000 Chevrolet S-10

What to do if your Chevy has p0171?

Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0171. Use FIXD to scan your Chevrolet to verify P0171 is the only code present. If other codes are present, they must be addressed first.

What is a powertrain diagnostic trouble code ( DTC )?

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Emissions Related DTCs Action Taken When the DTC Sets – Type A Action Taken When the DTC Sets – Type B Conditions for Clearing the MIL/DTC – Type A or Type B

What does DTC stand for in car category?

What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

What does ho2s mean on Buick fuel trim?

If the HO2S indicates a lean condition, the fuel trim values will be above 0 percent. If the HO2S indicates a rich condition, the FT values will be below 0 percent. The short term FT values change rapidly in response to the HO2S voltage signals.

What causes GMC fuel trim system Lean Bank 1 p0171?

The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate. If playback doesn’t begin shortly, try restarting your device.

What causes the p1101 code on a Chevy Cruze?

The P1101 code typically will not be enough to make the engine not run. A bad mass air flow sensor is enough to make the engine: If left unchecked, a bad MAF sensor can lead to other engine problems. There are many different problems issues than can cause the Cruze’s computer to throw the P0171 trouble code.

Where is the p0171 sensor located on a Chevrolet Cruze?

Where is the P0171 sensor located? There are far too many examples of vacuum leaks on Chevrolet engines to list here, but one engine in particular, the 1.4L gasoline engine fitted to Chevrolet Cruze and related applications deserves a special mention. The valve cover from such an engine is shown below-

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 does the OBD II fault code p0171 mean?

What Does Code P0171 Mean? OBD II fault code P0171 is a generic code that is most commonly defined as “System Too Lean- Bank 1”, and is set on gasoline engines when the PCM (Powertrain Control Module) detects that the air/fuel mixture is too lean.

How much does it cost to repair a p0174 Chevrolet?

The cost of diagnosing the P0174 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. When is the P0174 CHEVROLET code detected? – Fuel injection system does not operate properly.

What does the p0171 code on a Chevrolet mean?