Pinpoint Test A : DTCS P2681 And P2683: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
The PCM provides power to the transmission fluid warmer engine coolant bypass valve when the transmission fluid is below a calibrated temperature. When the valve is energized, the valve opens allowing warm coolant to flow to the transmission fluid warmer.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P2681 | Engine Coolant Bypass Valve A Control Circuit/Open | Open in the engine coolant bypass valve circuitry |
| P2683 | Engine Coolant Bypass Valve A Control Circuit High | Engine coolant bypass valve or PCM inoperable |
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- Transmission fluid warmer engine coolant bypass valve
- PCM