OBD-II কোড P0400-P0499: অক্সিলিয়ারি এমিশন কন্ট্রোল
This is a complete reference of generic OBD-II diagnostic trouble codes (DTCs) in the P0400-P0499 range, covering auxiliary emissions controls. These are standard SAE codes — your vehicle may also store manufacturer-specific codes that require OEM software to read.
এটি P0400-P0499 রেঞ্জের জেনেরিক OBD-II ডায়াগনস্টিক ট্রাবল কোড (DTC)-এর সম্পূর্ণ রেফারেন্স। এগুলো স্ট্যান্ডার্ড SAE কোড — আপনার গাড়িতে নির্মাতা-নির্দিষ্ট কোডও থাকতে পারে যা পড়তে OEM সফটওয়্যার দরকার।
| Code | Description |
|---|---|
| P0400 | Exhaust Gas Recirculation Flow Malfunction |
| P0401 | Exhaust Gas Recirculation Flow Insufficient Detected |
| P0402 | Exhaust Gas Recirculation Flow Excessive Detected |
| P0403 | Exhaust Gas Recirculation Circuit Malfunction |
| P0404 | Exhaust Gas Recirculation Circuit Range/Performance |
| P0405 | Exhaust Gas Recirculation Sensor A Circuit Low |
| P0406 | Exhaust Gas Recirculation Sensor A Circuit High |
| P0407 | Exhaust Gas Recirculation Sensor B Circuit Low |
| P0408 | Exhaust Gas Recirculation Sensor B Circuit High |
| P0410 | Secondary Air Injection System Malfunction |
| P0411 | Secondary Air Injection System Incorrect Flow Detected |
| P0412 | Secondary Air Injection System Switching Valve A Circuit Malfunction |
| P0413 | Secondary Air Injection System Switching Valve A Circuit Open |
| P0414 | Secondary Air Injection System Switching Valve A Circuit Shorted |
| P0415 | Secondary Air Injection System Switching Valve B Circuit Malfunction |
| P0416 | Secondary Air Injection System Switching Valve B Circuit Open |
| P0417 | Secondary Air Injection System Switching Valve B Circuit Shorted |
| P0418 | Secondary Air Injection System Relay \221A” Circuit Malfunction |
| P0419 | Secondary Air Injection System Relay “B\222 Circuit Malfunction |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) |
| P0421 | Warm Up Catalyst Efficiency Below Threshold (Bank 1) |
| P0422 | Main Catalyst Efficiency Below Threshold (Bank 1) |
| P0423 | Heated Catalyst Efficiency Below Threshold (Bank 1) |
| P0424 | Heated Catalyst Temperature Below Threshold (Bank 1) |
| P0430 | Catalyst System Efficiency Below Threshold (Bank 2) |
| P0431 | Warm Up Catalyst Efficiency Below Threshold (Bank 2) |
| P0432 | Main Catalyst Efficiency Below Threshold (Bank 2) |
| P0433 | Heated Catalyst Efficiency Below Threshold (Bank 2) |
| P0434 | Heated Catalyst Temperature Below Threshold (Bank 2) |
| P0440 | Evaporative Emission Control System Malfunction |
| P0441 | Evaporative Emission Control System Incorrect Purge Flow |
| P0442 | Evaporative Emission Control System Leak Detected (small leak) |
| P0443 | Evaporative Emission Control System Purge Control Valve Circuit |
| P0444 | Evaporative Emission Control System Purge Control Valve Circuit |
| P0445 | Evaporative Emission Control System Purge Control Valve Circuit Shorted |
| P0446 | Evaporative Emission Control System Vent Control Circuit Malfunction |
| P0447 | Evaporative Emission Control System Vent Control Circuit Open |
| P0448 | Evaporative Emission Control System Vent Control Circuit Shorted |
| P0449 | Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction |
| P0450 | Evaporative Emission Control System Pressure Sensor Malfunction |
| P0451 | Evaporative Emission Control System Pressure Sensor Range/Performance |
| P0452 | Evaporative Emission Control System Pressure Sensor Low Input |
| P0453 | Evaporative Emission Control System Pressure Sensor High Input |
| P0454 | Evaporative Emission Control System Pressure Sensor Intermittent |
| P0455 | Evaporative Emission Control System Leak Detected (gross leak) |
| P0460 | Fuel Level Sensor Circuit Malfunction |
| P0461 | Fuel Level Sensor Circuit Range/Performance |
| P0462 | Fuel Level Sensor Circuit Low Input |
| P0463 | Fuel Level Sensor Circuit High Input |
| P0464 | Fuel Level Sensor Circuit Intermittent |
| P0465 | Purge Flow Sensor Circuit Malfunction |
| P0466 | Purge Flow Sensor Circuit Range/Performance |
| P0467 | Purge Flow Sensor Circuit Low Input |
| P0468 | Purge Flow Sensor Circuit High Input |
| P0469 | Purge Flow Sensor Circuit Intermittent |
| P0470 | Exhaust Pressure Sensor Malfunction |
| P0471 | Exhaust Pressure Sensor Range/Performance |
| P0472 | Exhaust Pressure Sensor Low |
| P0473 | Exhaust Pressure Sensor High |
| P0474 | Exhaust Pressure Sensor Intermittent |
| P0475 | Exhaust Pressure Control Valve Malfunction |
| P0476 | Exhaust Pressure Control Valve Range/Performance |
| P0477 | Exhaust Pressure Control Valve Low |
| P0478 | Exhaust Pressure Control Valve High |
| P0479 | Exhaust Pressure Control Valve Intermittent |
| P0480 | Cooling Fan I Control Circuit Malfunction |
| P0481 | Cooling Fan 2 Control Circuit Malfunction |
| P0482 | Cooling Fan 3 Control Circuit Malfunction |
| P0483 | Cooling Fan Rationality Check Malfunction |
| P0484 | Cooling Fan Circuit Over Current |
| P0485 | Cooling Fan Power/Ground Circuit Malfunction |
Have a fault code? Send us a photo of the code or a video of the warning light on WhatsApp — we’ll tell you what it means before you book anything.
ফল্ট কোড দেখছেন? কোডের ছবি বা ওয়ার্নিং লাইটের ভিডিও WhatsApp-এ পাঠান — বুকিংয়ের আগেই আমরা বলে দেব এর অর্থ কী।
Related OBD-II Code Ranges
সম্পর্কিত OBD-II কোড রেঞ্জ:
- P0100-P0199: Fuel & Air Metering
- P0200-P0299: Injector Circuit
- P0300-P0399: Ignition / Misfire
- P0500-P0599: Speed & Idle Control
- P0600-P0699: Computer Output
- P0700-P0899: Transmission
See our complete guide: Car Fault Codes (DTC) Explained.
RB
Written by Rajib Bepari
Founder of MRB Auto Solution, with 3+ years of UAE dealership-level experience on European vehicle systems.
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