Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P023BCharge Air Cooler Coolant Pump "A" Control Circuit Low
P023BCharge Air Cooler Coolant Pump ""A"" Control Circuit Low
Manufacturer communications
5Original wording in English
JEEP
Not applicable to vehicles built for US market. Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow Response. ● P2251 - O2 Sensor 1/1 Negative C…
JEEP
Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow Response. ● P2251 - O2 Sensor 1/1 Negative Current Control Circuit/Open. ● P0131 - O2 Sensor…
JEEP
"Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow Response. ● P2251 - O2 Sensor 1/1 Negative Current Control Circuit/Open. ● P0131 - O2 Senso…
RAM
CEL (Check Engine Lamp) On, DTC P023B Charge Air Cooler Coolant Pump Control Circuit Low, U02A9 Lost Communication With Charge Air Cooler Coolant Pump
Check vehicle applicability
4A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | RENEGADE ↗ | 2019 |
| Jeep | WRANGLER ↗ | 2025 |
| Jeep | WRANGLER ↗ | 2024 |
| Ram | 1500 ↗ | 2021 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.