Search

Learn what P0656 means and how to diagnose ECM wiring issues P0656 Overview Code P0656 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 P0656 indicates an issue with the engine control module (ECM) wiring 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 wiring Corroded connectors Diagnostic Steps 1 Inspect ECM wiring 2 Test continuity Drive Safety Notes Wiring faults can lead to poor engine control and performance

Learn what P0810 means and how to diagnose clutch position sensor performance faults P0810 Overview Code P0810 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 P0810 indicates a malfunction in the clutch position sensor performance Symptoms Rough shifting Transmission failure 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 Electrical or wiring issues Diagnostic Steps 1 Inspect clutch position sensor2 Test sensor performance Drive Safety Notes Malfunctions in the clutch position sensor can lead to delayed shifting and engine stalling

Learn what P0528 means and how to diagnose engine cooling fan relay circuit issues P0528 Overview Code P0528 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 P0528 indicates an issue with the engine cooling fan relay circuit Symptoms Engine 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 Engine cooling system Possible Causes Failed cooling fan relay Diagnostic Steps 1 Inspect relay wiring 2 Test fan relay operation Drive Safety Notes Engine overheating risk

Learn what P0843 means and how to diagnose transmission fluid pressure sensor performance malfunctions P0843 Overview Code P0843 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 P0843 indicates a malfunction in the transmission fluid pressure sensor performance 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 fluid pressure sensor Possible Causes Faulty fluid pressure sensor Wiring or electrical issues Diagnostic Steps 1 Inspect fluid pressure sensor2 Test sensor performance Drive Safety Notes A malfunction in the fluid pressure sensor can lead to erratic shifting and slipping

Learn what P0725 means and how to diagnose engine speed sensor circuit faults P0725 Overview Code P0725 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 P0725 indicates a malfunction in the engine speed sensor circuit Symptoms Engine misfire 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 Engine speed sensor Possible Causes Faulty engine speed sensor Wiring issues Diagnostic Steps 1 Inspect engine speed sensor2 Test sensor output Drive Safety Notes Engine speed sensor failure can result in poor engine performance and misfires

Learn what P0786 means and how to diagnose transmission shift solenoid B performance malfunctions P0786 Overview Code P0786 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 P0786 indicates a malfunction in the transmission shift solenoid B performance Symptoms Slipping transmission Delayed 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 shift solenoid B Possible Causes Faulty shift solenoid B Fluid level issues Diagnostic Steps 1 Inspect shift solenoid B2 Test solenoid B performance Drive Safety Notes Poor solenoid performance can cause slipping and delays during gear engagement

Learn what P0478 means and how to diagnose exhaust pressure sensor range issues P0478 Overview Code P0478 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 P0478 indicates an exhaust pressure sensor circuit range issue Symptoms Loss of 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 Exhaust pressure sensor performance Possible Causes Wiring issues Diagnostic Steps 1 Inspect wiring 2 Test sensor output Drive Safety Notes Exhaust flow limited

Learn what P2123 means and how to diagnose high TPS input issues P2123 Overview Code P2123 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 P2123 indicates high input from the throttle position sensor Symptoms Sudden throttle changes 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 feedback Possible Causes Short to voltage Diagnostic Steps 1 Inspect TPS wiring; 2 Measure signal voltage Drive Safety Notes Throttle response unpredictable

Learn what P0667 means and how to diagnose intake manifold runner control sensor circuit malfunctions P0667 Overview Code P0667 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 P0667 indicates a malfunction in the intake manifold runner control sensor circuit Symptoms Poor engine performance Rough idling 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 manifold runner control sensor Possible Causes Faulty intake manifold runner control sensor Wiring issues Diagnostic Steps 1 Inspect intake manifold runner control sensor 2 Test sensor output Drive Safety Notes Engine performance could be compromised due to poor airflow control

Learn what P0632 means and how to diagnose fuel pressure sensor circuit faults P0632 Overview Code P0632 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 P0632 indicates a malfunction in the fuel pressure sensor circuit Symptoms Rough idle; 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 pressure sensor circuit Possible Causes Faulty fuel pressure sensor; Wiring issues Diagnostic Steps 1 Inspect fuel pressure sensor 2 Test sensor output Drive Safety Notes Fuel pressure problems could lead to poor engine performance

Learn what P0702 means and how to diagnose transmission range sensor circuit faults P0702 Overview Code P0702 Code Type P Code Class P0 System Transmission Severity Level Medium Emissions Related true Drivability Impact Major Diagnostic Protocol OBD2 Freeze Frame Useful true Code Definition Diagnostic trouble code P0702 indicates a malfunction in the transmission range sensor circuit Symptoms Stalling 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 range sensor Possible Causes Faulty range sensor Wiring issues Diagnostic Steps 1 Inspect transmission range sensor 2 Test sensor circuit Drive Safety Notes A faulty range sensor can cause transmission misbehavior