Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test
- CHECK FOR OTHER TRANSMISSION DTCS
- With the scan tool, check for other transmission DTCs.
Are there any gear ratio and/or speed sensor DTCs present in addition to P0219?
Yes
- Refer to the symptom and perform the appropriate symptom test. If speed sensor DTCs are present, perform their respective test first. See DIAGNOSTIC CODE INDEX .
No
- Go to step 2.
- With the scan tool, check for other transmission DTCs.
- CHECK FOR ENGINE DTCS
- With the scan tool, check for engine DTCs.
Are there any engine DTCs present?
Yes
- Refer to symptom and perform the appropriate symptom test. See DIAGNOSTIC CODE INDEX .
No
- Go to step 3.
- With the scan tool, check for engine DTCs.
- CHECK IF ENGINE MECHANICAL PROBLEMS ARE PRESENT
- Determine if any Engine mechanical problems are present.
Are there any Engine mechanical problems present?
Yes
- Repair engine as necessary. Refer ENGINE-SERVICE INFORMATION for the appropriate repair procedures.
- Refer to 3.7L - SERVICE INFORMATION .
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
No
- Go to step 4.
- Repair engine as necessary. Refer ENGINE-SERVICE INFORMATION for the appropriate repair procedures.
- Determine if any Engine mechanical problems are present.
- CHECK IF TRANSMISSION MECHANICAL PROBLEMS ARE PRESENT
- Determine if any Transmission mechanical problems are present.
- Turn the ignition off to the lock position.
- Remove the Transmission Oil Pan and inspect for excessive debris or a plugged Transmission Oil Filter..
Is there any debris, plugged Transmission Oil Filter, or signs of an internal transmission problem?
Yes
- Repair Transmission as necessary..
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
No
- Go to step 5.
- TEST DRIVE VEHICLE NOTE: The Engine and Transmission must not have mechanical problems and be operating normally before proceeding with this test.
- Replace and program the Powertrain Control Module (PCM) per the Service Information.
- Refer to MODULE, POWERTRAIN CONTROL for the appropriate service procedures and programming.
- Reassemble any previously disconnected connectors and/or components.
- With the scan tool, erase Transmission DTCs.
- Road test the vehicle.
- With the scan tool, read Transmission DTCs.
Did DTC P0219-ENGINE OVERSPEED reset?
Yes
- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM per the Service Information. Refer to Electrical/Electronic Control Modules/MODULE, Transmission Control - Description .
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
No
- Test Complete
- Perform NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
- Replace and program the Powertrain Control Module (PCM) per the Service Information.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.