Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part in your car that helps control the flow of exhaust gases. It's like a door that's supposed to open and close, but it's not working right now.
The exhaust flow control valve helps regulate the flow of exhaust gases for better engine performance and emissions control. This code indicates an issue with the electrical circuit controlling this valve.
The P2D13 code is triggered when the Engine Control Module (ECM) detects an open or malfunction in the control circuit for the Exhaust Flow Control Valve C. This valve is part of the exhaust system and is responsible for managing the flow of exhaust gases to optimize engine efficiency and reduce emissions.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty Exhaust Flow Control Valve
• Open or shorted wiring in the valve circuit
• Faulty ECM or control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connectors for damage.
• Test the exhaust flow control valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty exhaust flow control valve.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance of the exhaust system
• Routine checks of wiring and connectors
• Timely replacement of faulty components
Sensor Issue
• Avoid driving long distances until the issue is fixed.
• Visit a mechanic to prevent potential damage to the engine.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with issues in vehicles with complex exhaust management systems, particularly those with advanced emissions controls.
Moderate – It's important to fix this issue to maintain engine performance and emissions compliance.
Driving with a malfunctioning exhaust system can lead to increased emissions and may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle stationary or at idle
The exhaust flow control valve is typically located in the exhaust system near the engine or catalytic converter.
Q: Can I drive my car with the P2D13 code?
A: It's not recommended as it may lead to increased emissions and reduced engine performance.
Q: How can I prevent the P2D13 code?
A: Regular maintenance and inspections of the exhaust system 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 when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
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.