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- P0782 Code – Transmission Shift Timing Malfunction
Learn what P0782 means and how to diagnose transmission shift timing malfunctions P0782 Overview Code P0782 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 P0782 indicates a malfunction in the transmission system shift timing Symptoms Delayed shifting 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 Transmission shift timing Possible Causes Faulty shift solenoid Fluid level or quality issues Diagnostic Steps 1 Inspect shift solenoid2 Check fluid levels and condition Drive Safety Notes Shift timing issues can lead to slipping and poor vehicle performance
- P0353 Code – Ignition Coil C Circuit Malfunction
P0353 diagnostic trouble code explained with symptoms, causes, and diagnostic steps P0353 Overview Code P0353 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 P0353 indicates a malfunction in the ignition coil C primary/secondary circuit Symptoms 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 Coil C ignition faults affect combustion Possible Causes Faulty ignition coil Diagnostic Steps 1 Inspect coil C; 2 Replace if faulty Drive Safety Notes Misfires may worsen engine performance
- P0811 Code – Clutch Position Sensor Calibration
Learn what P0811 means and how to diagnose clutch position sensor calibration malfunctions P0811 Overview Code P0811 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 P0811 indicates a malfunction in the clutch position sensor calibration Symptoms Rough shifting Delayed engagement 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 Clutch position sensor Possible Causes Faulty clutch position sensor Poor sensor calibration Diagnostic Steps 1 Inspect sensor calibration2 Test sensor output Drive Safety Notes A malfunctioning or poorly calibrated clutch position sensor can cause erratic shifting
- P0506 Code – Idle Speed Low
Learn what P0506 means and how to diagnose low idle speed conditions P0506 Overview Code P0506 Code Type P Code Class P0 System Engine Severity Level Low Emissions Related false Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0506 indicates idle speed is lower than expected Symptoms Low idle RPM 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 Idle speed regulation Possible Causes Dirty throttle body Diagnostic Steps 1 Clean throttle body; 2 Relearn idle if required Drive Safety Notes Stalling may occur at stops
- P0853 Code – Transmission Control Module Circuit Malfunction
Learn what P0853 means and how to diagnose transmission control module circuit malfunctions P0853 Overview Code P0853 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 P0853 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 electrical issues Diagnostic Steps 1 Inspect TCM2 Test TCM circuit Drive Safety Notes Malfunctions in the TCM circuit can lead to poor shifting and overall vehicle drivability issues
- P0408 Code – EGR Position Sensor High Input
Learn what P0408 means and how to diagnose high input from the EGR position sensor P0408 Overview Code P0408 Code Type P Code Class P0 System Emissions Severity Level Medium Emissions Related true Drivability Impact Minor Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0408 indicates high input from the EGR position sensor circuit Symptoms Engine misfire; Poor throttle 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 EGR feedback control Possible Causes Short to voltage Diagnostic Steps 1 Inspect EGR wiring 2 Test sensor voltage Drive Safety Notes EGR flow may be excessive
- P0411 Code – Secondary Air Injection Incorrect Flow
Learn what P0411 means and how to diagnose secondary air injection airflow issues P0411 Overview Code P0411 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 P0411 indicates incorrect airflow detected in the secondary air injection system 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 Secondary air injection airflow monitoring and emissions control Possible Causes Faulty air pump; Check valve failure; Air leak Diagnostic Steps 1 Inspect air pump and check valves; 2 Verify airflow with scan tool; 3 Repair leaks or replace faulty components Drive Safety Notes Driving is safe but emissions may be affected
- P0601 Code – ECM Internal Failure
Learn what P0601 means and how to diagnose internal ECM failures P0601 Overview Code P0601 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 P0601 indicates an internal failure within the ECM 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 ECM; Electrical failure within ECM Diagnostic Steps 1 Inspect ECM wiring 2 Test ECM functionality Drive Safety Notes Engine control may be compromised
- P0536 Code – A/C Refrigerant Temperature Sensor Low Input
Learn what P0536 means and how to diagnose low input from the A/C refrigerant temperature sensor P0536 Overview Code P0536 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 P0536 indicates low input from the A/C refrigerant temperature sensor Symptoms Poor air conditioning 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 system pressure Possible Causes Low refrigerant level; Faulty refrigerant temperature sensor Diagnostic Steps 1 Check refrigerant level 2 Inspect refrigerant temperature sensor Drive Safety Notes Inadequate cooling capacity
- P0855 Code – Transmission Control Module Range Sensor Malfunction
Learn what P0855 means and how to diagnose transmission control module range sensor malfunctions P0855 Overview Code P0855 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 P0855 indicates a malfunction in the transmission control module (TCM) range sensor 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 control module (TCM) range sensor Possible Causes Faulty TCM range sensor Wiring issues Diagnostic Steps 1 Inspect TCM range sensor2 Test sensor functionality Drive Safety Notes A malfunction in the TCM range sensor can cause erratic shifting and loss of power
- P0664 Code – Intake Air Temperature Sensor Circuit
Learn what P0664 means and how to diagnose intake air temperature sensor circuit faults P0664 Overview Code P0664 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 P0664 indicates a malfunction in the intake air temperature sensor circuit Symptoms Poor fuel economy 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 Intake air temperature sensor Possible Causes Faulty intake air temperature sensor Wiring issues Diagnostic Steps 1 Inspect intake air temperature sensor 2 Test sensor output Drive Safety Notes Air intake issues can lead to engine inefficiency