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 part of the car that cools the air going into the engine is too cold on one side of the engine. It's like if your fridge was making your food too cold on one shelf.
The engine control module (ECM) has detected that the temperature of the air coming out of the charge air cooler is lower than expected on Bank 2.
The charge air cooler, also known as an intercooler, is responsible for cooling the air compressed by the turbocharger or supercharger before it enters the engine. This code indicates that the temperature sensor on Bank 2 is reading a temperature that is too low, which could affect engine performance and efficiency.
• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Possible engine misfires
• Faulty charge air cooler temperature sensor
• Wiring issues or poor connections
• Malfunctioning charge air cooler
• ECM software issue
ECM: Engine Control Module
Intercooler: A device used to cool air compressed by a turbocharger or supercharger
• Use an OBD-II scanner to confirm the code.
• Inspect the charge air cooler temperature sensor and wiring on Bank 2.
• Check for any leaks or blockages in the charge air cooler.
• Test the charge air cooler temperature sensor for proper operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Clean or replace the charge air cooler if blocked or leaking.
• Update the ECM software if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• BMW 3 Series
• Audi A4
• Mercedes-Benz C-Class
• Regular maintenance and inspections
• Ensure proper airflow to the charge air cooler
• Keep the cooling system in good condition
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid heavy acceleration until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been reported in vehicles with turbocharged engines, often due to sensor failures or wiring issues.
Moderate – It should be addressed soon to prevent engine performance issues.
Driving with this code may not be illegal, but it can affect vehicle performance and emissions.
• Engine at operating temperature
• Vehicle in motion
The charge air cooler and its temperature sensor are typically located near the front of the engine bay, connected to the turbocharger system.
Q: What is a charge air cooler?
A: A charge air cooler, or intercooler, cools the air compressed by the turbocharger before it enters the engine.
Q: Can I drive with a P10B3 code?
A: While you can drive with this code, it's best to address it soon to avoid potential engine performance issues.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.