DTC Troubleshooting: P0103 (50)
DTC P0103:
 MAF Sensor Circuit High Input
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check the MAF SENSOR in the DATA LIST with the HDS.
Is about 199 gm/s or 4.90 V or higher indicated?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor 1 and the ECM.■
  1. Check for Temporary DTCs or DTCs with the HDS.
Are DTC P0103 and P0113 indicated at same time?
YES -
Go to Step 4 .
NO -
Go to Step 11 .
  1. Turn the ignition switch OFF, and wait 2 minutes.
  1. Disconnect the MAF sensor/IAT sensor 1 5P connector.
  1. At sensor side, measure resistance between MAF sensor/IAT sensor 1 5P connector terminals No. 1 and No. 4.
Is there about 0 Ω?
YES -
Go to Step 10 .
NO -
Go to Step 7 .
  1. Disconnect ECM connector No. 1 (96P).