P0314

DTC P0314

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0314
- Single Cylinder Engine Misfire Detected

Circuit/System Description

The engine control module (ECM) uses information from the crankshaft position (CKP) sensor to determine when an engine misfire is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder, the ECM is able to detect individual misfire events. The camshaft position (CMP) sensor is used to identify which cylinder is misfiring if a majority of the misfire occurs on the same cylinder. If there is a camshaft position (CMP) sensor error, misfire will be detected but the specific cylinder cannot be identified.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

The ECM detects that a misfire is present with a CMP sensor error.

Action Taken When the DTC Sets

DTC P0314 is a Type A (MIL flashing) or Type B DTC.

Conditions for Clearing the DTC

DTC P0314 is a Type A (MIL flashing) or Type B DTC.

Reference Information
DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Engine running, observe the DTC information with a scan tool. DTCs P0016 or P0340 should not set.

If DTC P0016 or P0340 are set, refer to DTC P0016 or P0340 (P0016).

If DTC P0300 is set, refer to DTC P0300-P0304 (P0300).