Chevrolet P3400: Cylinder Deactivation System Performance
Is your scanner showing Chevrolet P3400?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P3400: Cylinder Deactivation System Performance
OVERVIEWWhat Does The Chevrolet P3400 Code Mean?
The engine speed is between 450-6,400 RPM. The IAT Sensor parameter is between -7 and +125°C (+19 and +257°F). The ECT Sensor parameter is between 70- 125°C (158-257°F). The time in V8 mode is more than 2 seconds. The time in V4 mode is more than 2 seconds. This DTC runs continuously within the enabling conditions.
The ECM detects that the actual measured values from the MAF sensor, MAP sensor, and TP sensor is not within the range of the calculated values for V4 mode.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
- GM, 2013 Service Bullettin – Prior To Any Circuit Testing.
- GM, 2017 Service Bullettin – PIP5447C P3400 setting with 8 speed only.
- GM, 2020 Service Bullettin – PIT5742 SES MIL / No Start / No Crank / Runs Rough / Reduced
Engine Power / Loss Communication / DTCs (V8 and V6 Inspect
Engine Harness)
. - GM, 2020 Service Bullettin – PIT5713A SES MIL / IPC Gauges Sweep / IPC Warning Message /
Reduced Engine Power / Loss Communication / Various DTCs (V6
Inspect Engine Harness).
