What does code p0171 mean on Chevrolet engine?

To keep your Chevrolet engine running properly, the powertrain control module (PCM) tries to compensate for the lean condition by injecting more fuel to the mixture in an effort to maintain the proper 14.7:1 ratio. When these adjustments become too large, code P0171 is triggered. Vacuum leaks – PCV hose, vacuum hoses, intake manifold gasket.

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.

How much does it cost to diagnose p0171 Chevrolet fuel injection system?

The cost of diagnosing the P0171 CHEVROLET code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour. When is the code detected? – Fuel injection system does not operate properly.

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 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 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 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 MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate.

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 does the p0171 code on bank 1 mean?

Code Definition. P0171 – System Too Lean (Bank 1) What does the P0171 code mean? The P0171 code means that the Oxygen (O2) sensor on bank 1 recognized a too lean mixture to correct it. The Oxygen O2 sensors have the ability to correct a fuel mixture of +-15%. If it needs to correct the air-fuel mixture more than that, the P0171 code will be stored.

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 lean Bank 1 on a Chevy mean?

P0171 CHEVROLET Fuel Trim System Lean Bank 1: Code Meaning, Causes, Symptoms, & Tech Notes P0171 CHEVROLET | Fuel Trim System Lean Bank 1 | The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and