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 the car that helps control the flow of exhaust gases. It's like a door that isn't opening or closing properly, and the car's computer noticed this issue.
The exhaust flow control valve helps manage the flow of exhaust gases to improve engine efficiency. When the circuit is low, it indicates a problem with the electrical signal to this valve.
The P2D19 code is triggered when the Powertrain Control Module (PCM) detects a low voltage condition in the circuit controlling the exhaust flow control valve C. This valve is part of the system that regulates exhaust gas recirculation (EGR) to optimize engine performance and emissions.
• Check engine light is on
• Reduced engine performance
• Increased emissions
• Faulty exhaust flow control valve
• Wiring issues such as open or short circuits
• Malfunctioning Powertrain Control Module (PCM)
PCM: Powertrain Control Module, the computer that controls engine and transmission functions.
EGR: Exhaust Gas Recirculation, a system that reduces nitrogen oxide emissions by recirculating a portion of the exhaust gases back into the engine cylinders.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• 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 PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance of the exhaust system
• Inspect wiring for wear and tear
• Ensure proper engine tuning
Sensor Issue
• Do not ignore the check engine light.
• Get the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle excessively until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with issues in vehicles with advanced exhaust management systems, often appearing in newer models with stricter emissions standards.
Moderate – It should be addressed soon to prevent potential damage to the exhaust system and to maintain vehicle performance.
Driving with a malfunctioning exhaust system can lead to increased emissions, which may not comply with legal standards.
• Engine at operating temperature
• Vehicle stationary
The exhaust flow control valve is typically located near the exhaust manifold or within the EGR system.
Q: Can I drive with a P2D19 code?
A: It's not recommended to drive for long periods with this code, as it can affect engine performance and emissions.
Q: How do I clear the P2D19 code?
A: The code can be cleared with an OBD-II scanner after the issue is fixed, but it will return if the problem persists.
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