Diagnostic Test
WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Other DTCS
- Turn The Ignition On.
- Wait Five Seconds After Ignition Is Turned On.
- With The Scan Tool, Read DTCS.
Is DTC P051D Or P051C Active?
Yes
- Troubleshoot Other DTCS First.
No
- Go To 2
- Check For Crankcase Vented To Atmosphere
- Inspect Engine For Crankcase Leaks Of Oil Or Crankcase Gases.
- Check The Valve Cover Gasket, Crankcase Breather Tube, Dipstick Tube, Block Plugs, And Oil Fill Cap.
Are Any Leaks Found?
Yes
- Repair Leaks.
- Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
No
- Go To 3
- Check For High Resistance In The (K926) Crankcase Pressure Sensor Signal Circuit
- Turn The Ignition Off.
- Disconnect The Crankcase Pressure Sensor Harness Connector.
- Disconnect The PCM C1 Harness Connector.NOTE:
Check Connectors - Clean/Repair As Necessary.
- Measure The Resistance Of The (K926) Crankcase Pressure Signal Circuit Between The Crankcase Pressure Sensor Harness Connector And The PCM C1 Harness Connector.
Is The Resistance Below 5.0 Ohms?
Yes
- Go To 4
No
- Repair The (K926) Crankcase Pressure Signal Circuit For An Open Or High Resistance.
- Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
- Check The Crankcase Pressure Sensor
- Reconnect The PCM C1 Harness Connector.
- Turn The Ignition On.
- Connect A Jumper Between The (F857) 5-Volt Supply Circuit And The (K926) Crankcase Pressure Sensor Signal Circuit At The Crankcase Pressure Sensor Harness Connector.
- With The Scan Tool, Read DTCS.
Is DTC P051D Active?
Yes
- Replace The Crankcase Pressure Sensor In Accordance With The Service Information.
- Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .
No
- Replace The Powertrain Control Module In Accordance With The Service Information.
- Perform The POWERTRAIN VERIFICATION TEST. Refer To POWERTRAIN VERIFICATION TEST .