Malfunction Indicator Lamp Illuminated With DTC P0300 – 2016-2017 Buick & Chevrolet

Bulletin No.: PIP5421A
Date: Sep-2016

Subject: Malfunction Indicator Lamp Illuminated With DTC P0300

 

Brand: Model: Model Year: VI N: Engine: Transmission:
from to from to
Buick Encore 2016 2017 ALL ALL 1.4L (RPO LE2) ALL
Chevrolet Cruze 2016 2017 ALL ALL 1.4L (RPO LE2) ALL
Chevrolet Malibu 2016 2017 ALL ALL 1.5L (RPO LFV) ALL

 

Involved Region or Country USA, Canada
Additional RPO/s: N/A
Condition Some customers may comment on a rough running engine with the Malfunction Indicator Lamp ON.

Upon inspection, a technician may find DTC P0300 set along with a misfire and low compression in one or more cylinders.

Cause This condition may be caused by a damaged piston.

 

Correction

Repair the engine mechanical concern based on the results of the service procedure testing below.

 

Service Procedure

Perform Engine Compression Testing in SI.

If low compression is found, perform Cylinder Leakage Testing in SI and record the test results to isolate the concern.

Note:  (To isolate the source of cylinder leakage to a valve or cylinder sealing issue, it may be necessary to remove the intake and exhaust manifolds).

If excessive leakage to the crankcase is isolated, check piston and cylinder wall condition.

If the cylinder wall surface has not been compromised, replace the damaged piston.

Note:  Do not replace pistons that do not show damage.

Shown below are examples of pistons with varying levels of damage.

pistons with varying levels of damage

pistons with varying levels of damage

pistons with varying levels of damage

pistons with varying levels of damage

 

Shown below are several examples of light vertical marks visible on the cylinder wall.

In these examples, none of the marks in the cylinder walls could be felt with the finger tip or nail and engine replacement is not recommended.

light vertical marks visible on the cylinder wall

light vertical marks visible on the cylinder wall

light vertical marks visible on the cylinder wall

 

Shown below is an example of a damaged cylinder wall.

In this example the scuffing is wide and has removed the crosshatch from the cylinder wall in the area above the arrow. This would result in oil consumption and requires engine replacement.

damaged cylinder wall

 

Warranty Information

Description
The correction for this concern may be one of several repairs described above. For vehicles repaired under warranty, please use the appropriate warranty labor operation based on the original cause in addition to well documented straight time.

 

Version 2
Modified 09/30/2016 Updated Service Procedure.

Bulletin No.: PIP5421A
Date: Sep-2016

https://www.nhtsa.gov/recalls?nhtsaId=10099861

https://static.nhtsa.gov/odi/tsbs/2016/MC-10099861-2280.pdf

Download (PDF, 1.08MB)


 

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