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.
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HOMESERVICE MANUALSMERCURY2011MARINER PREMIER, 2.5 7, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXCLIMATE CONTROL SYSTEM DTCSHYBRIDAIR CONDITIONING COMPRESSOR MODULE (ACCM)
2011 Mercury Mariner Premier, 2.5 7, AWD
Air Conditioning Compressor Module (ACCM)
2011 Mercury Mariner Premier, 2.5 7, AWDSECTION Air Conditioning Compressor Module (ACCM)
AIR CONDITIONING COMPRESSOR MODULE (ACCM) DIAGNOSTIC TROUBLE CODE (DTC) LIST - HYBRID
| DTC | Description | Action to Take |
|---|---|---|
| P0AFA:16 | Hybrid Battery System Voltage Low: Circuit Voltage Below Threshold | GO to PINPOINT TEST J . |
| P0AFB:17 | Hybrid Battery System Voltage High: Circuit Voltage Above Threshold | GO to PINPOINT TEST J . |
| B11EE:19 | A/C Compressor: Current Above Threshold | INSTALL a new electric A/C compressor. REFER to CLIMATE CONTROL article. TEST the system for normal operation. |
| B11EE:49 | A/C Compressor: Internal Electronic Failure | INSTALL a new electric A/C compressor. REFER to CLIMATE CONTROL article. TEST the system for normal operation. |
| B11EE:4B | A/C Compressor: Over Temperature | VERIFY the refrigerant charge level. REFER to SPECIFICATIONS in this service information. If the charge level is low, RECHARGE the system, CLEAR the DTCs and REPEAT the self-test. TEST the system for normal operation. If the DTC returns, INSTALL a new electric A/C compressor. REFER to CLIMATE CONTROL article. TEST the system for normal operation. |
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose lost communication with the ECM/PCM "A". |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Module: No Sub Type Information | REFER to MODULE COMMUNICATIONS NETWORK article to diagnose lost communication with the IPC module. |
| U0401:68 | Invalid Data Received From ECM/PCM "A": Event Information | This DTC can set due to a fault in the PCM or because the PCM is unable to communicate over the Controller Area Network (CAN) bus. CARRY OUT a self-test of the PCM. If the scan tool indicates that the PCM is not responding, REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the network communication concern. If PCM DTCs are present, REFER to the INTRODUCTION article. |
| U0423:68 | Invalid Data Received From Instrument Panel Cluster Control Module: Event Information | This DTC can set due to a fault in the Instrument Panel Cluster (IPC) or because the IPC is unable to communicate over the CAN bus. CARRY OUT a self-test of the IPC . If the scan tool indicates that the IPC is not responding, REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the network communication concern. If IPC DTCs are present, REFER to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article to diagnose the IPC system fault. |
| U3000:49 | Control Module: Internal Electronic Failure | INSTALL a new electric A/C compressor. REFER to CLIMATE CONTROL article. TEST the system for normal operation. |
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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.