The P0C48: Hybrid Battery Pack Coolant Pump Control Circuit Low refers to a fault where the control circuit for the hybrid battery coolant pump is experiencing low voltage. This can result from wiring issues, a faulty coolant pump, or problems within the control circuit, potentially leading to ineffective cooling of the hybrid battery.
P0C48 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0C48: Hybrid Battery Pack Coolant Pump Control Circuit Low |
| Is it serious? | Yes, low voltage in the control circuit can prevent the coolant pump from functioning correctly, leading to possible overheating of the hybrid battery. |
| Possible causes | – Low voltage in the coolant pump control circuit – Faulty coolant pump – Wiring issues |
| How to diagnose? | – Measure the voltage in the coolant pump control circuit – Test the coolant pump – Check wiring and connections |
P0C48 Meaning
The P0C48: Hybrid Battery Pack Coolant Pump Control Circuit Low code indicates that the control circuit responsible for operating the hybrid battery pack’s coolant pump is experiencing lower than expected voltage. This can hinder the performance of the coolant pump, potentially leading to overheating issues and impacting the performance of the hybrid battery system.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional related fault codes that may provide further context on the issue. | OBD-II Scanner |
| Measure the Voltage in the Coolant Pump Control Circuit | Use a multimeter or diagnostic tool to measure the voltage in the control circuit and ensure it matches the manufacturer’s specifications. | Multimeter, Diagnostic Tool |
| Test the Coolant Pump | Test the coolant pump to ensure it is functioning properly and that it is receiving the correct voltage. | Diagnostic Tool, Multimeter |
| Check Wiring and Connections | Inspect the wiring and connectors for signs of damage, corrosion, or loose connections that could cause a low voltage condition. | Flashlight, Multimeter |
| Clear the Code and Test Drive | After completing repairs, clear the fault code and take the vehicle for a test drive to confirm that the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | Re-scan the vehicle after the test drive to ensure the P0C48 code has been cleared and does not return. | OBD-II Scanner |
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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)