P0103
P0103 - MAF SENSOR CIRCUIT LOW
When Monitored and Set Condition
- When Monitored: With the engine running and no fault in the throttle valve actuator.
- Set Condition: The Mass Air Flow (MAF) Sensor value is less than 16 kg/h when the throttle valve angle is greater than 14° for approximately 5 seconds, or the MAF Sensor reading is greater than a calculated value that is determined by engine speed and throttle valve angle for approximately 5 seconds.
Diagnostic Test
1. CHECK FOR CURRENT DTC
Turn the ignition on.
With the DRB III(R), read PCM DTCs.
Is this DTC present?
Yes
- For complete diagnosis of this DTC, refer to (P0102) MASS AIR FLOW CIRCUIT. P0102
No
- Go To 2
2. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.
NOTE: Check for any Technical Service Bulletins that may apply.
Were there any problems found?
Yes
- Repair as necessary.
- Perform POWERTRAIN VERIFICATION TEST - VER 2. Powertrain Verification Test - Ver 2
No
- The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.