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Learn what P0452 means and how to diagnose low input from the EVAP pressure sensor P0452 Overview Code P0452 Code Type P Code Class P0 System Emissions Severity Level Medium Emissions Related true Drivability Impact None Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0452 indicates low input from the EVAP pressure sensor Symptoms Check Engine Light Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products EVAP pressure sensor circuit Possible Causes Short to ground Diagnostic Steps 1 Inspect wiring 2 Test sensor output Drive Safety Notes Emissions system performance reduced

Learn what P0455 means and how to diagnose large EVAP system leaks P0455 Overview Code P0455 Code Type P Code Class P0 System Engine Severity Level Low Emissions Related true Drivability Impact None Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0455 indicates a large leak detected in the EVAP system Symptoms Check Engine Light Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products EVAP leak detection Possible Causes Disconnected EVAP hose Diagnostic Steps 1 Inspect EVAP hoses; 2 Perform smoke test Drive Safety Notes Emissions compliance affected

Learn what U0100 means and how to diagnose lost communication with the engine control module U0100 Overview Code U0100 Code Type U Code Class U0 System Network Severity Level High Emissions Related false Drivability Impact Major Diagnostic Protocol CAN Freeze Frame Useful false Code Definition Diagnostic trouble code U0100 indicates lost communication with the engine control module (ECM/PCM) Symptoms No start; Multiple warning lights Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Vehicle network communication Possible Causes CAN bus wiring fault; ECM power loss Diagnostic Steps 1 Check ECM power and ground; 2 Inspect CAN bus integrity Drive Safety Notes Vehicle may not start or operate

Learn what P0529 means and how to diagnose fuel pressure sensor range issues P0529 Overview Code P0529 Code Type P Code Class P0 System Engine Severity Level Medium Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0529 indicates a malfunction in the fuel pressure sensor circuit range Symptoms Engine misfire; Poor fuel economy Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Fuel pressure sensor circuit Possible Causes Malfunctioning fuel pressure sensor Diagnostic Steps 1 Inspect wiring 2 Test sensor output Drive Safety Notes Engine performance and efficiency affected

Learn what P0628 means and how to diagnose fuel pressure regulator circuit faults P0628 Overview Code P0628 Code Type P Code Class P0 System Engine Severity Level Medium Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0628 indicates an issue with the fuel pressure regulator circuit Symptoms Poor acceleration; Reduced fuel efficiency Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Fuel pressure regulator Possible Causes Faulty fuel pressure regulator; Wiring issue Diagnostic Steps 1 Inspect fuel pressure regulator 2 Test pressure regulator output Drive Safety Notes Fuel pressure instability can affect engine performance

Learn what P0566 means and how to diagnose ignition system voltage issues P0566 Overview Code P0566 Code Type P Code Class P0 System Engine Severity Level Medium Emissions Related false Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0566 indicates an issue with the ignition system voltage Symptoms Difficulty starting; Poor engine performance Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Ignition voltage Possible Causes Faulty ignition system voltage regulator Diagnostic Steps 1 Inspect ignition system voltage 2 Test voltage regulator Drive Safety Notes Potential starting issues if unresolved

Learn what P0747 means and how to diagnose torque converter clutch solenoid circuit malfunctions P0747 Overview Code P0747 Code Type P Code Class P0 System Transmission Severity Level High Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0747 indicates a malfunction in the torque converter clutch solenoid circuit Symptoms Slipping transmission Engine stalling Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Torque converter clutch solenoid Possible Causes Faulty torque converter clutch solenoid Electrical issues Diagnostic Steps 1 Inspect TCC solenoid2 Test solenoid circuit Drive Safety Notes A malfunction in the torque converter clutch solenoid can cause the engine to stall or affect shifting

Learn what P0867 means and how to diagnose transmission fluid pressure sensor performance malfunctions P0867 Overview Code P0867 Code Type P Code Class P0 System Transmission Severity Level High Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0867 indicates a malfunction in the transmission fluid pressure sensor performance Symptoms Harsh shifting Poor acceleration Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Transmission fluid pressure sensor Possible Causes Faulty fluid pressure sensor Wiring or circuit issues Diagnostic Steps 1 Inspect fluid pressure sensor2 Test sensor performance Drive Safety Notes A malfunction in the fluid pressure sensor can lead to slipping transmission and poor performance

Learn what P0299 means, symptoms, causes, and diagnostic steps for turbocharger underboost issues P0299 Overview Code P0299 Code Type P Code Class P0 System Engine Severity Level Medium Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0299 indicates turbocharger underboost condition (Bank 1) Symptoms Poor acceleration; Reduced power; Check Engine Light Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Turbocharger performance and engine power delivery Possible Causes Boost leaks; Faulty turbocharger; Wastegate stuck open Diagnostic Steps 1 Inspect intercooler and boost hoses for leaks; 2 Test turbocharger operation; 3 Check wastegate function; 4 Verify boost pressure sensor data Drive Safety Notes Driving is possible but power is reduced Avoid heavy load

P0173 code explained Learn symptoms, causes, and diagnostic steps for a fuel trim malfunction on Bank 2 P0173 Overview Code P0173 Code Type P Code Class P0 System Engine, Emissions Severity Level Medium Emissions Related true Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0173 indicates a fuel trim malfunction on Bank 2 detected by the ECM Symptoms Check Engine Light illuminated; Rough idle Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products Fuel trim adjustments on Bank 2 control air-fuel mixture balance Possible Causes Vacuum leaks; Oxygen sensor faults; Fuel system issues Diagnostic Steps 1 Confirm the code; 2 Review Bank 2 fuel trim data; 3 Inspect intake system; 4 Test oxygen sensor function Drive Safety Notes Driving is possible but performance and emissions may be affected

Learn what P0445 means, symptoms, causes, and diagnostic steps for EVAP purge valve short circuit P0445 Overview Code P0445 Code Type P Code Class P0 System Engine, Emissions Severity Level Low Emissions Related true Drivability Impact None Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0445 indicates a short circuit in the EVAP purge valve control Symptoms Check Engine Light illuminated Overview applies to this diagnostic code. Affected Systems On This Page Code Definition Symptoms Affected Systems Possible Causes Diagnostic Steps Drive Safety Notes More Resources Diagnostic Trouble Codes Diagnostic Q&A Automotive Knowledge Base All Diagnostic Products EVAP purge solenoid control Possible Causes Shorted wiring; Faulty purge valve Diagnostic Steps 1 Inspect wiring for shorts; 2 Test purge valve resistance; 3 Replace solenoid if needed Drive Safety Notes Driving is safe