What is P2404 : Engine Error code Causes Explained
Understand about the P2404 engine trouble code, its causes, and its effects on vehicle performance. This blog explains the symptoms and how to detect and fix the problem.
How to Identify a DTCs Number
Understand, this trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
To identify a DTC number like P2404, the vehicle’s onboard diagnostics system stores the code when a malfunction is detected. Using an OBD-II scanner connected to the diagnostic port, you can read these codes, which reveal the specific issue detected by the vehicle’s computer
Causes of P2404 Error Code:
- Faulty Evap Leak Detection Pump:
The pump itself might be failing, either electrically or mechanically. - Wiring Issues:
Faulty wiring/connections to the leak detection pump can trigger the code. - EVAP System Leaks:
A leak in the EVAP system (fuel tank, lines, or canister) can lead to the code. - Faulty Purge Valve:
A malfunctioning purge valve, which controls the flow of fuel vapors, can trigger the code. - Clogged or Broken Charcoal Canister.
A cloaded or damaded charcoal canister. which stores fyel vapors, can cause issues.
Risk Level of P2404 Error Code:
The P2404 engine error code indicates an issue with the secondary air injection system, and its risk level is considered medium because, while it usually doesn’t cause immediate engine failure, ignoring it can lead to increased emissions and potential damage to the catalytic converter over time.
Common Car Brands Affected by P2404 Code:
The P2404 code can affect various vehicles, it is most commonly associated with:
- Audi
- Subaru
Video: P2404 Engine Error code
FAQ’s
What is P2404 Engine Error Code?
P2404 indicates an issue with the secondary air injection system, often related to a stuck open air injection control valve.
What Causes the P2404 Error?
Common causes include a faulty air injection valve, damaged wiring, or blockage in the secondary air injection system.
What is the Risk Level of P2404?
The risk level is medium; it may cause increased emissions and potential engine performance issues if left unresolved.
Which Vehicles Are Affected by P2404?
This code commonly appears in various models with secondary air injection systems, including many makes from Audi and Subaru.