Search

Learn what P0650 means and how to diagnose coolant temperature sensor circuit malfunctions P0650 Overview Code P0650 Code Type P Code Class P0 System Engine Severity Level High Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0650 indicates a malfunction in the coolant temperature sensor circuit Symptoms Overheating; 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 Coolant temperature sensor Possible Causes Faulty coolant temperature sensor; Wiring issues Diagnostic Steps 1 Inspect coolant temperature sensor 2 Test sensor output Drive Safety Notes If ignored, the engine could overheat

Learn what P0325 means, symptoms, causes, and diagnostic steps for Bank 1 knock sensor circuit faults P0325 Overview Code P0325 Code Type P Code Class P0 System Engine Severity Level High Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0325 indicates a malfunction in the knock sensor 1 circuit (Bank 1) Symptoms Engine knocking; Reduced 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 timing adjustment and engine protection for Bank 1 Possible Causes Faulty knock sensor; Wiring short/open; Sensor misalignment Diagnostic Steps 1 Inspect knock sensor mounting and wiring; 2 Test sensor resistance; 3 Monitor sensor signal during engine operation; 4 Replace sensor if needed Drive Safety Notes Engine knocking may lead to piston/rod damage

Learn what P0552 means and how to diagnose low input from the power steering pressure sensor P0552 Overview Code P0552 Code Type P Code Class P0 System Steering Severity Level Medium Emissions Related false Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0552 indicates low input from the power steering pressure sensor Symptoms Heavy steering; Poor steering response 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 Power steering sensor Possible Causes Low fluid level; Faulty power steering pressure sensor Diagnostic Steps 1 Inspect power steering fluid level 2 Test pressure sensor Drive Safety Notes Increased steering effort

Learn what U0155 means and how to diagnose instrument cluster communication faults U0155 Overview Code U0155 Code Type U Code Class U0 System Network Severity Level Medium Emissions Related false Drivability Impact Minor Diagnostic Protocol CAN Freeze Frame Useful false Code Definition Diagnostic trouble code U0155 indicates lost communication with the instrument cluster Symptoms Gauges inoperative 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 Instrument panel communication Possible Causes Cluster power failure Diagnostic Steps 1 Check cluster power supply 2 Inspect CAN wiring Drive Safety Notes Speed and warning indicators unavailable

Learn what P0862 means and how to diagnose transmission fluid pressure sensor circuit malfunctions P0862 Overview Code P0862 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 P0862 indicates a malfunction in the transmission fluid pressure sensor circuit Symptoms Slipping transmission Transmission overheating 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 circuit Drive Safety Notes A malfunctioning fluid pressure sensor can cause transmission overheating and poor performance

Learn what P0352 means, symptoms, causes, and diagnostic steps for an ignition coil circuit fault P0352 Overview Code P0352 Code Type P Code Class P0 System Engine Severity Level High Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0352 indicates a malfunction in the ignition coil B primary/secondary circuit Symptoms Engine misfire 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 Coil B faults cause cylinder misfires Possible Causes Faulty ignition coil Diagnostic Steps 1 Identify coil B; 2 Replace faulty coil Drive Safety Notes Driving with misfires may damage the catalytic converter

Learn what P0126 means, including symptoms, causes, and diagnostic steps for insufficient engine coolant temperature P0126 Overview Code P0126 Code Type P Code Class P0 System Engine Severity Level Low Emissions Related true Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0126 indicates insufficient coolant temperature for stable engine operation detected by the ECM Symptoms Check Engine Light illuminated; Poor fuel economy; Delayed heater 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 Engine warm-up and fuel management systems rely on proper coolant temperature Possible Causes Thermostat stuck open; Faulty ECT sensor; Cooling system issues Diagnostic Steps 1 Confirm the code; 2 Monitor coolant temperature rise; 3 Inspect thermostat function; 4 Check coolant level and flow; 5 Replace faulty components as needed Drive Safety Notes Driving is generally safe, but extended operation may affect fuel efficiency

Learn what P0404 means, symptoms, causes, and diagnostic steps for EGR position sensor performance issues P0404 Overview Code P0404 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 P0404 indicates an EGR position sensor range or performance problem Symptoms Check Engine Light illuminated; Poor fuel economy; Engine hesitation 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 EGR valve position monitoring and emissions control Possible Causes Faulty EGR valve position sensor; Carbon buildup; EGR valve sticking Diagnostic Steps 1 Monitor EGR position data via scan tool; 2 Inspect EGR valve for carbon buildup; 3 Clean or replace EGR valve; 4 Test sensor wiring Drive Safety Notes Driving is safe but emissions may increase

Learn what P0699 means and how to diagnose mass air flow sensor circuit malfunctions P0699 Overview Code P0699 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 P0699 indicates a malfunction in the mass air flow sensor circuit Symptoms Rough idle 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 Mass air flow sensor Possible Causes Faulty MAF sensor Clogged air filter Diagnostic Steps 1 Inspect MAF sensor 2 Test sensor output Drive Safety Notes Poor MAF sensor performance can cause increased fuel consumption

Learn what P0730 means and how to diagnose incorrect gear ratio issues P0730 Overview Code P0730 Code Type P Code Class P0 System Transmission Severity Level High Emissions Related false Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0730 indicates an incorrect gear ratio detected Symptoms Slipping transmission 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 Gear ratio monitoring Possible Causes Internal transmission wear Diagnostic Steps 1 Compare input/output speeds 2 Inspect transmission fluid Drive Safety Notes Transmission damage possible

Learn what P0607 means and how to diagnose ECM internal circuit malfunctions P0607 Overview Code P0607 Code Type P Code Class P0 System Engine Severity Level High Emissions Related false Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0607 indicates a problem with the ECM’s internal circuit Symptoms Check Engine Light; Engine misfire 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 Engine Control Module (ECM) Possible Causes Faulty internal ECM circuit; Corrupted data in ECM Diagnostic Steps 1 Inspect ECM for internal faults 2 Perform ECM reset Drive Safety Notes Potential for engine control issues