2067-Mass Air Flow Sensor Duty Cycle Below Limit: Notes
For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .
- When Monitored:
With the ignition on.
| Possible Causes |
|---|
| INTERMITTENT DTC |
| MASS AIR FLOW TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| MASS AIR FLOW SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE |
| IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR HIGH RESISTANCE |
| MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORTED TO THE MASS AIR FLOW TEMPERATURE SENSOR SIGNAL CIRCUIT |
| MASS AIR FLOW TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| MASS AIR FLOW SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| MASS AIR FLOW SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| MASS AIR FLOW TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND |
| MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORTED TO GROUND |
| MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORTED TO THE MASS AIR FLOW SENSOR GROUND CIRCUIT |
| MASS AIR FLOW SENSOR |
| ENGINE CONTROL MODULE (ECM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure