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Learn what U0184 means and how to diagnose infotainment communication issues U0184 Overview Code U0184 Code Type U Code Class U0 System Network Severity Level Low Emissions Related false Drivability Impact None Diagnostic Protocol OBD2 Freeze Frame Useful false Code Definition Diagnostic trouble code U0184 indicates a loss of communication with the radio or infotainment control module Symptoms Radio or display not working; 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 Infotainment and audio system communication Possible Causes Module power loss; CAN wiring issues Diagnostic Steps 1 Check module power supply; 2 Inspect CAN wiring; 3 Test module communication; 4 Replace module if faulty Drive Safety Notes Driving is safe

Learn what P0788 means and how to diagnose transmission fluid pressure control solenoid circuit malfunctions P0788 Overview Code P0788 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 P0788 indicates a malfunction in the transmission fluid pressure control solenoid circuit Symptoms Harsh shifting 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 control solenoid circuit Possible Causes Faulty fluid pressure control solenoid Wiring or electrical problems Diagnostic Steps 1 Inspect fluid pressure control solenoid2 Test solenoid circuit Drive Safety Notes Faulty solenoids can cause fluid pressure issues, leading to overheating

Learn what P0889 means and how to diagnose issues with the transmission control module circuit P0889 Overview Code P0889 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 P0889 indicates a malfunction in the transmission control module (TCM) circuit Symptoms Slipping transmission Harsh shifting 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 circuit issues Diagnostic Steps 1 Inspect TCM2 Test the TCM circuit Drive Safety Notes A malfunction in the TCM can result in transmission failure and poor shifting performance

Learn what P2135 means and how to diagnose throttle position sensor correlation faults P2135 Overview Code P2135 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 P2135 indicates a correlation error between throttle position sensors A and B Symptoms Reduced power 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 Electronic throttle correlation logic Possible Causes TPS mismatch Diagnostic Steps 1 Compare TPS A/B data; 2 Perform throttle relearn Drive Safety Notes Vehicle may enter limp mode

Learn what P0491 means and how to diagnose insufficient EGR flow issues P0491 Overview Code P0491 Code Type P Code Class P0 System Emissions Severity Level Medium Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0491 indicates insufficient EGR flow detected in the exhaust system Symptoms Poor acceleration; 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 EGR flow control Possible Causes Clogged EGR valve; Failed EGR valve solenoid Diagnostic Steps 1 Inspect EGR valve 2 Check for carbon buildup Drive Safety Notes Potential for engine damage if ignored

Learn what P0890 means and how to diagnose transmission control module circuit malfunctions P0890 Overview Code P0890 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 P0890 indicates a malfunction in the transmission control module (TCM) circuit Symptoms Harsh shifting Transmission slipping 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 circuit Drive Safety Notes A malfunctioning TCM can cause shifting issues and poor drivability

Learn what P0676 means and how to diagnose glow plug control circuit malfunctions in cylinder 6 P0676 Overview Code P0676 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 P0676 indicates a malfunction in the glow plug control circuit for cylinder 6 Symptoms Poor engine performance Difficulty starting 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 Glow plug control system Possible Causes Faulty glow plug for cylinder 6 Wiring issues Diagnostic Steps 1 Inspect glow plug for cylinder 6 2 Test glow plug control circuit Drive Safety Notes Malfunctioning glow plugs can prevent the engine from starting in cold temperatures

Learn what P0522 means, symptoms, causes, and diagnostic steps for low engine oil pressure sensor input P0522 Overview Code P0522 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 P0522 indicates low input from the engine oil pressure sensor Symptoms Oil pressure warning light; Engine knocking 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 oil pressure monitoring Possible Causes Wiring short to ground; Faulty sensor Diagnostic Steps 1 Inspect wiring harness; 2 Verify oil pressure mechanically; 3 Replace sensor if needed Drive Safety Notes Stop driving if actual oil pressure is low

Learn what P0537 means and how to diagnose high input from the A/C refrigerant temperature sensor P0537 Overview Code P0537 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 P0537 indicates high input from the A/C refrigerant temperature sensor Symptoms Insufficient cooling 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 system temperature monitoring Possible Causes Overcharged refrigerant; Faulty refrigerant temperature sensor Diagnostic Steps 1 Check refrigerant level 2 Test refrigerant temperature sensor Drive Safety Notes Inadequate cooling performance

Learn what P2120 means and how to diagnose throttle position sensor circuit faults P2120 Overview Code P2120 Code Type P Code Class P0 System Engine Severity Level Medium Emissions Related false Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P2120 indicates a malfunction in the throttle position sensor circuit Symptoms 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 Throttle position monitoring Possible Causes TPS failure Diagnostic Steps 1 Monitor TPS signal; 2 Inspect wiring Drive Safety Notes Throttle response inconsistent

Learn what P0626 means and how to diagnose fuel rail pressure sensor circuit faults P0626 Overview Code P0626 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 P0626 indicates a malfunction in the fuel rail pressure sensor circuit Symptoms Poor acceleration; 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 Fuel rail pressure sensor Possible Causes Faulty fuel rail pressure sensor; Wiring issues Diagnostic Steps 1 Inspect fuel rail pressure sensor 2 Test sensor output Drive Safety Notes Fuel delivery may be unstable, affecting engine performance