DTC Troubleshooting: P2227 (13)

DTC P2227:  BARO Sensor Range/Performance Problem

1.Turn the ignition switch ON (II).

2.Check the BARO SENSOR in the DATA LIST with the HDS.

Is atmospheric pressure indicated?

YES - Go to 3.

NO - Go to 7.

3.Do the DTC CLEAR in the CLEAR MENU with the HDS.

4.Start the engine. Hold the engine speed at 3,000 rpm (min-1) with no load (in neutral) until the radiator fan comes on, then let it idle.

5.Test-drive under following conditions.
  • Engine Coolant temperature more than 158°F (70°C)
  • Transmission in 2nd position
  • Vehicle speed 0 km/h (0 mph) to 60 km/h (38 mph) with fully acceleration

6.Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS.


YES - Go to 7.

NO - If it is PASSED, intermittent failure, system is OK at this time. If it is NOT COMPLETED, go to 4 and recheck.

7.Substitute a known-good ECM.

8.Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2227 indicated, check for poor connections at the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting.

NO - Replace the original ECM.n