Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in your car has detected a problem with the electrical circuit that controls a pump for cooling air going into the engine. It's like a fan not working properly because the switch is broken.
The P2CAE code indicates a low voltage condition in the control circuit for the charge air cooler coolant pump B.
The charge air cooler coolant pump B is responsible for circulating coolant to cool the air entering the engine. The control circuit for this pump is monitored by the vehicle's engine control module (ECM). If the ECM detects a low voltage condition in this circuit, it triggers the P2CAE code.
• Check Engine Light is on
• Reduced engine performance
• Overheating of the engine
• Unusual noises from the engine compartment
• Faulty charge air cooler coolant pump B
• Open or shorted wiring in the pump control circuit
• Poor electrical connection at the pump
• Faulty ECM
ECM: Engine Control Module
Coolant: A fluid used to transfer heat away from the engine
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the charge air cooler coolant pump B.
• Test the voltage and ground signals at the pump.
• Check the operation of the pump.
• Repair or replace damaged wiring or connectors.
• Replace the charge air cooler coolant pump B if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regular maintenance and inspection of cooling system components.
• Ensure proper electrical connections.
• Use recommended coolant types.
Sensor Issue
• Do not ignore the check engine light.
• Get the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if overheating occurs.
Check with the vehicle manufacturer for warranty coverage on emission-related components.
This code has been associated with issues in vehicles with turbocharged engines where additional cooling is required.
Moderate – Addressing this issue promptly can prevent further engine damage.
Driving with a malfunctioning cooling system can lead to engine damage and may not comply with emission standards.
• Engine running
• Coolant system pressurized
The charge air cooler coolant pump B is typically located near the front of the engine bay, close to the radiator.
Q: Can I drive with a P2CAE code?
A: It's not recommended to drive with this code as it can lead to engine overheating and damage.
Q: How is the charge air cooler coolant pump different from the radiator?
A: The charge air cooler coolant pump specifically cools the air entering the engine, while the radiator cools the engine itself.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.