Diagnostic Trouble Code Search

Find detailed information about vehicle diagnostic trouble codes (DTCs). Enter a code or select a make to search our comprehensive database.

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DTC Code Format Guide
P Powertrain
B Body
C Chassis
U Network

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P Codes

Code Type System System Name Module Message
P0407 P-Code Powertrain Exhaust Gas Recirculation Engine Control Module Exhaust Gas Recirculation Sensor B Circuit Low
P0408 P-Code Powertrain Exhaust Gas Recirculation Engine Control Module Exhaust Gas Recirculation Sensor B Circuit High
P0410 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Malfunction
P0411 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Incorrect Flow Detected
P0412 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve A Circuit Malfunction
P0413 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve A Circuit Open
P0414 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve A Circuit Shorted
P0415 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve B Circuit Malfunction
P0416 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve B Circuit Open
P0417 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Switching Valve B Circuit Shorted
P0418 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Relay A Circuit Malfunction
P0419 P-Code Powertrain Secondary Air Injection Engine Control Module Secondary Air Injection System Relay B Circuit Malfunction
P0420 P-Code Powertrain Catalyst Engine Control Module Catalyst System Efficiency Below Threshold (Bank 1)
P0421 P-Code Powertrain Catalyst Engine Control Module Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 P-Code Powertrain Catalyst Engine Control Module Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 P-Code Powertrain Catalyst Engine Control Module Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 P-Code Powertrain Catalyst Engine Control Module Heated Catalyst Temperature Below Threshold (Bank 1)
P0430 P-Code Powertrain Catalyst Engine Control Module Catalyst System Efficiency Below Threshold (Bank 2)
P0431 P-Code Powertrain Catalyst Engine Control Module Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 P-Code Powertrain Catalyst Engine Control Module Main Catalyst Efficiency Below Threshold (Bank 2)