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.
Air Conditioning Control Module (ACCM)
| DTC | Description | Action |
|---|---|---|
| P0562:00 | System Voltage Low: No Sub Type Information | RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the DC to DC Converter Control Module (DC/DC). REFER to: DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE - HYBRID ELECTRIC VEHICLE (HEV) (414-05 Voltage Converter/Inverter, Diagnosis and Testing). If there are no Diagnostic Trouble Codes (DTCs) in the DC to DC Converter Control Module (DC/DC), GO to PINPOINT TEST B |
| P0563:00 | System Voltage High: No Sub Type Information | REFER to: DIRECT CURRENT/DIRECT CURRENT (DC/DC) CONVERTER CONTROL MODULE - HYBRID ELECTRIC VEHICLE (HEV) (414-05 Voltage Converter/Inverter, Diagnosis and Testing). |
| P0AFA:16 | Hybrid/EV Battery System Voltage Low: Circuit Voltage Below Threshold |
|
| P0AFB:17 | Hybrid/EV Battery System Voltage High: Circuit Voltage Above Threshold |
|
| P0AFB:1C | Hybrid/EV Battery System Voltage High: Circuit Voltage Out of Range |
|
| B11EE:19 | A/C Compressor: Circuit Current Above Threshold |
|
| B11EE:41 | A/C Compressor: General Checksum Failure | RETRIEVE and REPAIR Diagnostic Trouble Codes (DTCs) in the PCM
and BECM. VERIFY the integrity of the connectors and wiring in the ACCM
(air conditioning control module) system. If no problems are found, INSTALL a new A/C
electric compressor. REFER to: AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR (412-00 Climate Control System - General Information, Removal and Installation). |
| B11EE:4B | A/C Compressor: Over Temperature | VERIFY the refrigerant charge level. REFER to: SPECIFICATIONS (412-00 Climate Control System - General Information, Specifications). If the charge level is low, RECHARGE the system, REFER to: AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING (412-00 Climate Control System - General Information, General Procedures). CLEAR the Diagnostic Trouble Codes (DTCs). CYCLE ignition. OPERATE the system on MAX A/C for 5 minutes, then REPEAT the self-test. If the DTC returns, INSTALL a new A/C Electric Compressor. REFER to: AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR (412-00 Climate Control System - General Information, Removal and Installation). |
| B11EE:92 | A/C Compressor: Performance or Incorrect Operation | GO to PINPOINT TEST I |
| U0001:88 | High Speed CAN Communication Bus: Bus off | The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC . VERIFY the integrity of the connectors and wiring. |
| U0140:00 | Lost Communication with Body Control Module: No Sub Type Information | GO to PINPOINT TEST D |
| U0293:00 | Lost Communication with Hybrid/EV Powertrain Control Module: No Sub Type Information | GO to PINPOINT TEST V |
| U0422:00 | Invalid Data Received From Body Control Module: No Sub Type Information | RETRIEVE and REPAIR all non-network Diagnostic Trouble Codes (DTCs) in the BCM
. REFER to: BODY CONTROL MODULE (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing). |
| U3000:04 | Control Module: System Internal Failure | INSTALL a new A/C
electric compressor. REFER to: AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR (412-00 Climate Control System - General Information, Removal and Installation). |
| U3000:42 | Control Module: General Memory Failure | CLEAR the Diagnostic Trouble Codes (DTCs). CYCLE ignition. OPERATE the system on MAX A/C
for 5 minutes, then REPEAT the self-test. If the DTC
returns, INSTALL a new A/C
Electric Compressor. REFER to: AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR (412-00 Climate Control System - General Information, Removal and Installation). |
| U3000:49 | Control Module: Internal Electronic Failure | INSTALL a new A/C
electric compressor. REFER to: AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR (412-00 Climate Control System - General Information, Removal and Installation). |
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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.
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