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 is taking too long to check if the air flowing into the engine is correct. It's like when you take too long to check if you have the right amount of ingredients for a recipe.
The engine control module (ECM) is taking an unusually long time to verify the plausibility of the mass or volume air flow sensor's correction signal.
The P113A code is triggered when the ECM detects that the correction signal from the mass or volume air flow sensor takes longer than expected to reach a plausible state. This could indicate a problem with the sensor, wiring, or ECM itself.
• Check Engine Light is on
• Poor fuel economy
• Rough idle or stalling
• Faulty mass air flow (MAF) sensor
• Wiring issues or poor connection in the MAF sensor circuit
• ECM software or hardware malfunction
ECM: Engine Control Module
MAF Sensor: Mass Air Flow Sensor
• Use an OBD-II scanner to confirm the code.
• Inspect the MAF sensor and its wiring for damage.
• Test the MAF sensor signal with a multimeter.
• Replace the faulty MAF sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Volkswagen Jetta
• Audi A4
• BMW 3 Series
• Regularly clean the MAF sensor.
• Ensure air filters are replaced on schedule.
• Check for any air leaks in the intake system.
Sensor Issue
• Avoid driving with this code active as it may cause poor performance.
• Consult with a professional mechanic for accurate diagnosis.
Check your vehicle's warranty for coverage on emissions-related components.
This code has been associated with vehicles that have high mileage or those that have not had regular maintenance.
Moderate – It's important to address this issue to avoid further engine performance problems.
Driving with a malfunctioning MAF sensor can lead to increased emissions and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The MAF sensor is typically located between the air filter box and the throttle body in the intake air duct.
Q: Can I drive with a P113A code?
A: It's not recommended as it may lead to poor engine performance and increased emissions.
Q: How can I prevent a P113A code?
A: Regular maintenance, including cleaning or replacing the MAF sensor and air filter, can help prevent this code.
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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.
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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.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
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.