DTC P1103 - Mass Airflow Above Maximum Threshold🔗
Conditions for Setting DTC P1103🔗
- Engine Running
- Mass Airflow Sensor ≥ 66.14 lb/min
- The above must be present for a period of 128 instances/cycles or greater to trigger DTC P1103
Diagnostic Steps🔗
| Step | Action | Value (s) | YES | NO |
|---|---|---|---|---|
| 1 | - Key ON, Engine running at full operating temperature - Within VCM Live, open the MAF sensor DTC Maximum parameter, does the MAF sensor parameter display more than 66.14 lb/min? |
Go to Step 2 | Intermittent Issue — Refer to Intermittent Diagnostics | |
| 2 | - Key OFF - Disconnect the MAF sensor - Key ON - Does the MAF sensor parameter within VCM Live display pressure less than 0.05 lb/min? |
Go to Step 3 | Go to Step 5 | |
| 3 | - Probe the MAF connector ground cavity "B" with a test light connected to battery voltage - Does the test light come on? |
Go to Step 4 | Go to Step 7 | |
| 4 | - Check the location of the MAF, ensure the location is free from physical damage or any and all debris that can cause restriction of airflow - Is the MAF sensor location area OK? |
Go to Step 5 | Repair the location that has physical damage and clean any debris that was found | |
| 5 | - Key OFF - Disconnect the ECU connector "B" and inspect the pins for any physical damage or corrosion - Are the pins OK? |
Go to Step 6 | Repair the circuit and pins as necessary, locate any wires that need to be repaired or replaced | |
| 6 | - Replace the MAF sensor - Is the replacement complete? |
Go to Step 8 | N/A | |
| 7 | - Disconnect the ECU connector "B" and check for continuity between the MAF sensor connector ground cavity "B" & ECU ground pin SP4 - Do you have continuity between them? |
Go to Step 8 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 8 | - Clear any DTC from the ECU - Turn the ignition off and wait 30 seconds - Start the engine and operate the engine to full operating temperature - Observe the Check Engine Light on the Menu bar in VCM Live - After operating the engine within the test parameters, check for any stored codes - Does the engine operate without any stored DTCs? |
System is now operational and ready to be tuned | Contact HP Tuners Support |
Note
If the engine does not operate without stored DTCs after completing all steps, contact HP Tuners Support for further assistance.