Engine Cooling System DTCS
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| P0125 | Insufficient Coolant Temp For Closed Loop Fuel Control | GO to PINPOINT TEST C |
| P0217 | Engine Coolant Overtemperature Condition |
GO to PINPOINT TEST B |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | GO to PINPOINT TEST C |
| P0480 | Fan 1 Control Circuit | Refer to INTRODUCTION - HYBRID . |
| P0481 | Fan 2 Control Circuit | Refer to INTRODUCTION - HYBRID . |
| P0691 | Fan 1 Control Circuit Low | Refer to INTRODUCTION - HYBRID . |
| P0692 | Fan 1 Control Circuit High | Refer to INTRODUCTION - HYBRID . |
| P0693 | Fan 2 Control Circuit Lo. | Refer to INTRODUCTION - HYBRID . |
| P0694 | Fan 2 Control Circuit High | Refer to INTRODUCTION - HYBRID . |
| P1285 | Cylinder Head Overtemperature Condition |
GO to PINPOINT TEST B |
| P1299 | Cylinder Head Overtemperature Protection Active |
GO to PINPOINT TEST B |
| P2600 | Coolant Pump "A" Control Circuit/Open | REFER to: AUXILIARY CLIMATE CONTROL . |
| P2601 | Coolant Pump "A" Control Circuit Performance/Stuck Off | REFER to: AUXILIARY CLIMATE CONTROL . |
| P2602 | Coolant Pump "A" Control Circuit Low | REFER to: AUXILIARY CLIMATE CONTROL |
| P2603 | Coolant Pump "A" Control Circuit High | REFER to: AUXILIARY CLIMATE CONTROL |
| P2682 | Engine Coolant Bypass Valve "A" Control Circuit Low | REFER to: CLIMATE CONTROL SYSTEM . |
| P2683 | Engine Coolant Bypass Valve "A" Control Circuit High | REFER to: CLIMATE CONTROL SYSTEM . |
| P26AB | Engine Coolant Bypass Valve "A" Stuck/Open | REFER to: CLIMATE CONTROL SYSTEM . |
| P26CA | Engine Coolant Pump Control Circuit Open | GO to PINPOINT TEST D |
| P26CB | Engine Coolant Pump Performance/Stuck Off | CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation. REPEAT the PCM
self-test. If DTC
P26CB is retrieved again, INSTALL a new electric coolant pump. REFER to: COOLANT PUMP . |
| P26CE | Engine Coolant Pump Overspeed | CLEAR the Diagnostic Trouble Codes (DTCs). CHECK for low coolant level in degas bottle. If coolant is low, GO to PINPOINT TEST A
If the coolant is not low, there may be an air bubble in the system. Perform cooling system filling and bleeding. REFER to: COOLING SYSTEM DRAINING, FILLING AND BLEEDING . CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation. REPEAT the PCM self-test. If DTC P26CE is retrieved again, INSTALL a new electric coolant pump. REFER to: COOLANT PUMP . |
| P26D0 | Engine Coolant Pump Control Module System Voltage Low | GO to PINPOINT TEST D |
| P26D1 | Engine Coolant Pump Control Module System Voltage High | GO to PINPOINT TEST D |
| P26D2 | Engine Coolant Pump Control Module Overtemperature | CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation. REPEAT the PCM
self-test. If DTC
P26D2 is retrieved again, INSTALL a new electric coolant pump. REFER to: COOLANT PUMP . |
| P26D3 | Engine Coolant Pump Supply Voltage Circuit | GO to PINPOINT TEST D |
| U019F | Lost Communication With Engine Coolant Pump Control Module | GO to PINPOINT TEST D |
| All Other PCM Diagnostic Trouble Codes (DTCs) | - | REFER to: ELECTRONIC ENGINE CONTROLS - PLUG-IN HYBRID ELECTRIC VEHICLE (PHEV) . |