The P0C24: Auxiliary Transmission Fluid Pump Control Module Circuit Low fault code indicates that the control module for the auxiliary transmission fluid pump is receiving lower-than-expected voltage. This could be caused by faulty wiring, poor connections, or electrical system issues. Low voltage in the control module can lead to improper operation of the transmission fluid pump, affecting transmission cooling and performance.
P0C24 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0C24: Auxiliary Transmission Fluid Pump Control Module Circuit Low |
| Is it serious? | Yes, low voltage can cause malfunctioning of the pump, leading to transmission issues. |
| Possible causes | – Low voltage in the control module circuit – Faulty wiring or connections – Electrical system problems |
| How to diagnose? | – Measure voltage in the control module circuit – Inspect wiring and connections – Check electrical system for issues |
P0C24 Meaning
The P0C24 code indicates that the voltage in the control module circuit for the auxiliary transmission fluid pump is lower than the acceptable range. This low voltage can be caused by damaged wiring, poor electrical connections, or issues within the electrical system, such as battery or alternator problems. If the voltage is too low, the transmission fluid pump may not function properly, leading to inadequate transmission cooling.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional related codes that may provide more insight into the low voltage issue, particularly those involving the electrical system or control module. | OBD-II Scanner |
| Measure Voltage in the Control Module Circuit | Use a multimeter to measure the voltage in the control module circuit for the auxiliary transmission fluid pump. Compare the readings with manufacturer specifications. | Multimeter, Vehicle Manual |
| Inspect Wiring and Connections | Visually inspect the wiring and connectors for any signs of damage, corrosion, or loose connections that could be causing the low voltage. Repair or replace as necessary. | Flashlight, Multimeter, Wiring Diagram |
| Check the Electrical System | Inspect the vehicle’s electrical system, including the battery, alternator, and voltage regulator, to ensure they are providing adequate voltage to the control module circuit. | Multimeter, Flashlight, Electrical System Tools |
| Test Control Module Components | If the electrical system and wiring are functioning properly, test the control module components to ensure they are not causing the low voltage condition. | Diagnostic Tool, Vehicle Manual |
| Clear the Code and Test Drive | After repairs or replacements, clear the fault code using an OBD-II scanner and perform a test drive to ensure the issue is resolved and the transmission fluid pump is operating properly. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the system to ensure that the P0C24 code 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)