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Learn what P0680 means and how to diagnose ECM power relay circuit malfunctions P0680 Overview Code P0680 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 P0680 indicates a malfunction in the engine control module (ECM) power relay circuit Symptoms Poor engine performance 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 Engine Control Module (ECM) Possible Causes Faulty ECM relay Power supply issue Diagnostic Steps 1 Inspect ECM power relay 2 Test ECM power supply Drive Safety Notes Power supply issues can cause engine control failure

Learn what P0760 means and how to diagnose shift solenoid C faults P0760 Overview Code P0760 Code Type P Code Class P0 System Transmission Severity Level Medium Emissions Related false Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0760 indicates a shift solenoid C malfunction Symptoms Transmission stuck in gear 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 gear selection Possible Causes Solenoid C failure Diagnostic Steps 1 Test solenoid C operation 2 Inspect valve body passages Drive Safety Notes Gear changes limited

Learn what P0850 means and how to diagnose transmission control module malfunctions P0850 Overview Code P0850 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 P0850 indicates a malfunction in the transmission control module (TCM) Symptoms Poor shifting Transmission slippage 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 control module (TCM) Possible Causes Faulty TCM Wiring or electrical issues Diagnostic Steps 1 Inspect TCM2 Test TCM functionality Drive Safety Notes A malfunctioning TCM can severely affect shifting and overall drivability

Learn what P0896 means and how to diagnose transmission fluid pressure sensor circuit malfunctions P0896 Overview Code P0896 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 P0896 indicates a malfunction in the transmission fluid pressure sensor circuit Symptoms Transmission slippage 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 issues Diagnostic Steps 1 Inspect fluid pressure sensor2 Test sensor circuit Drive Safety Notes A malfunctioning fluid pressure sensor can affect transmission shifting and cause overheating

Learn what P0643 means and how to diagnose exhaust gas temperature sensor circuit faults P0643 Overview Code P0643 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 P0643 indicates a malfunction in the exhaust gas temperature sensor circuit Symptoms Overheating; 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 Exhaust gas temperature sensor Possible Causes Faulty exhaust gas temperature sensor; Wiring issues Diagnostic Steps 1 Inspect exhaust gas temperature sensor 2 Test sensor output Drive Safety Notes Overheating could damage the exhaust system

Learn what P0864 means and how to diagnose transmission fluid pressure sensor circuit malfunctions P0864 Overview Code P0864 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 P0864 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 issues Diagnostic Steps 1 Inspect fluid pressure sensor2 Test sensor circuit Drive Safety Notes A malfunction in the fluid pressure sensor can result in overheating and slipping of the transmission

Learn what P0092 means and how to diagnose high fuel pressure regulator control input P0092 Overview Code P0092 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 P0092 indicates high input in the fuel pressure regulator control circuit Symptoms Rich running condition 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 regulation Possible Causes Short to voltage Diagnostic Steps 1 Inspect wiring; 2 Monitor regulator signal Drive Safety Notes Fuel pressure may be excessive

Learn what C0495 means and how to diagnose electronic power steering motor faults C0495 Overview Code C0495 Code Type C Code Class C0 System Steering Severity Level High Emissions Related false Drivability Impact Major Diagnostic Protocol CAN Freeze Frame Useful false Code Definition Diagnostic trouble code C0495 indicates an electronic power steering motor circuit fault Symptoms Heavy steering 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 EPS motor control Possible Causes EPS motor failure Diagnostic Steps 1 Check EPS motor power 2 Inspect wiring Drive Safety Notes Steering assist limited

Learn what P0591 means and how to diagnose cooling system thermostat control circuit faults P0591 Overview Code P0591 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 P0591 indicates an issue with the cooling system thermostat control 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 Cooling system thermostat Possible Causes Sticking thermostat; Faulty thermostat control circuit Diagnostic Steps 1 Inspect thermostat operation 2 Test control circuit Drive Safety Notes Overheating risk if not resolved

Learn what C0045 means and how to diagnose left rear wheel speed sensor faults C0045 Overview Code C0045 Code Type C Code Class C0 System ABS Severity Level Medium Emissions Related false Drivability Impact Minor Diagnostic Protocol CAN Freeze Frame Useful false Code Definition Diagnostic trouble code C0045 indicates a malfunction in the left rear wheel speed sensor circuit Symptoms Traction control warning 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 ABS and traction control Possible Causes Sensor contamination Diagnostic Steps 1 Clean sensor 2 Inspect wiring Drive Safety Notes Traction control limited

Learn what P0539 means and how to diagnose refrigerant pressure sensor circuit malfunctions P0539 Overview Code P0539 Code Type P Code Class P0 System A/C Severity Level Medium Emissions Related false Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0539 indicates a malfunction in the A/C refrigerant pressure sensor circuit Symptoms Poor cooling 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 A/C refrigerant pressure monitoring Possible Causes Faulty refrigerant pressure sensor Diagnostic Steps 1 Inspect refrigerant pressure sensor 2 Test sensor output Drive Safety Notes A/C may not cool effectively