Tech Center & Insights
OBD-II fault-code references, repair walk-throughs and field-tested troubleshooting from the iCarsoft engineering team and our partner technicians.
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836 articles
Diagnose and Clear P0123
Resolve P0123 (Throttle Position Sensor High Voltage) with iCarsoft CR Eagle. Test TPS circuit voltage/resistance, check wiring/connectors, clean throttle body & reset to restore engine performance and fuel efficiency.
Diagnose and Clear U0401
Diagnose and clear U0401 (Invalid Data From ECM/PCM) with iCarsoft CR Eagle. Analyze CAN bus data, test sensors/ECM, fix wiring issues & verify communication to restore vehicle performance and safety systems.
Diagnose and Clear P0001
Diagnose and clear P0001 (Fuel Pressure Regulator Control Circuit/Open) with iCarsoft CR Eagle. Test circuit voltage, monitor fuel pressure, actuate regulator & fix wiring/regulator issues to restore engine performance.
Resolve P0441 Error: Repair Evaporative Emission Control Problems Using iCarsoft CR Eagle
Fix P0441 (EVAP System Incorrect Purge Flow) with iCarsoft CR Eagle. Test purge/vent valves, check for leaks/hoses, monitor system pressure, repair components & clear codes to fix emissions issues, fuel inefficiency.
Understanding OBD-II Code P0030
Learn what OBD-II code P0030 means, its symptoms, causes, and repair steps. Diagnose heater circuit issues and fix with CR Eagle oxygen sensor for reliable performance.
Diagnose and Clear P1296
Resolve P1296 (ECT Sensor Malfunction) with iCarsoft CR Eagle. Test sensor resistance, check circuit continuity, monitor live temp data & fix wiring/connectors to prevent overheating and boost engine efficiency.
How to Diagnose & Clear P0237 with iCarsoft CR MAX: Fix Turbo Boost Sensor Low Circuit Faults
Fix P0237 (Turbo/Supercharger Boost Sensor 'A' Circuit Low) with iCarsoft CR MAX. Monitor actual vs. target boost, detect leaks, test sensor/wastegate, run ECM relearn & clear codes to fix power loss, turbo lag, poor fuel efficiency.
P0036 Code: O2 Sensor Heater Circuit (B1S2) Fix Guide
P0036 signals a fault in the downstream O2 sensor heater. Discover causes, symptoms, diagnosis steps, repair costs, and DIY fixes from iCarsoft technicians.
Introducing iCarsoft BMM V3.0: The Ultimate Diagnostic Tool for BMW, MINI, and Rolls-Royce
iCarsoft BMM V3.0: Exclusive diagnostic tool for BMW, MINI & Rolls-Royce. 15 service functions, bi-directional tests, AutoVIN. OBD1/OBD2 support, free lifetime updates. Ideal for owners & mechanics.
Check Engine Light On? Here’s What Code P0420 Really Means
Learn the causes and fixes for P0420 code: “Catalyst System Efficiency Below Threshold (Bank 1)”. Diagnose accurately with iCarsoft CR Ultra.
Diagnose and Clear U0100
Fix U0100 (Lost Communication with ECM/PCM) using iCarsoft CR Eagle. Analyze CAN bus network, test power/ground connections, check module communication & resolve wiring/software issues to restore vehicle functionality.
Fixing P0170 Error Code with iCarsoft CR Ultra: A Comprehensive Guide
Learn how to diagnose and fix P0170 (Fuel Trim Malfunction Bank 1) using the iCarsoft CR Ultra. Step-by-step guide to resolve fuel mixture issues with live data and bi-directional tests.
Introducing the iCarsoft POR V3.0 Enhanced Version: A Must-Have Porsche Diagnostic Tool for DIY Mechanics
Upgrade to iCarsoft POR V3.0 Enhanced Version. Wider vehicle coverage, full-system diagnostics, user-friendly interface & wireless updates. Perfect for mechanics and DIYers.
iCarsoft CR Legend
Discover the iCarsoft CR Legend, a powerful OE-level car diagnostic scanner with CAN FD, DoIP, TPMS, battery test, and videoscope—ideal for professionals and serious DIYers.
P0321 Code
Learn the causes, symptoms, and fixes for OBD-II P0321. Diagnose engine speed input problems with the advanced iCarsoft CR Eagle tool for accurate repairs.
Mastering P0140: Diagnose and Repair Secondary Oxygen Sensor Faults with iCarsoft CR Ultra
Fix P0140 (Bank 1 Sensor 2 Oxygen Sensor Malfunction) with iCarsoft CR Ultra. Diagnose via live data, test heaters & resolve downstream O2 sensor issues for better emissions.
Conquering P0685: How to Diagnose and Fix It with iCarsoft CR Ultra
Resolve P0685 (ECM/PCM Power Relay Malfunction) easily with iCarsoft CR Ultra. Step-by-step guide to test circuits, activate relays & fix electrical issues in your vehicle.
Understanding OBD-II Error Code P0238: Turbocharger Boost Sensor A Circuit High
Learn about P0238 Turbocharger Boost Sensor A Circuit High, its symptoms, causes, and how CR Ultra parts can help you quickly restore performance and prevent turbo damage.
Understanding OBD-II Code P0116: Engine Coolant Temperature Sensor Circuit Range/Performance
Learn the causes, symptoms, and fixes for OBD-II code P0116. Diagnose and repair with the iCarsoft CR Ultra P for accurate engine coolant sensor testing.
Introducing the iCarsoft POR V3.0 – The Next-Generation Porsche Diagnostic Tool
Explore the iCarsoft POR V3.0 – a powerful Porsche diagnostic scanner with full-system support, 20+ service reset functions, Auto VIN, bidirectional tests, and lifetime free updates.
Understanding OBD-II Code P0402: How to Diagnose & Fix “Exhaust Gas Recirculation Flow Excessive Detected"
Learn what OBD-II code P0402 means, its common causes, and how to fix it. Discover how the iCarsoft CR Ultra helps diagnose and clear EGR flow excessive errors effectively.
Diagnose and Clear P0090
Fix P0090 (Fuel Pressure Regulator Control Circuit Malfunction) with iCarsoft CR Eagle. Test circuit voltage/continuity, actuate FPR solenoid, monitor live fuel pressure & repair wiring/connectors to restore engine performance.
What Does Code P0670 Mean? - Diagnosis & Fix Guide
Learn what the P0670 code means, common symptoms of glow plug control module issues, causes, and how to fix it using tools like the iCarsoft CR Ultra for accurate diagnostics.
iCarsoft POR V1.0
iCarsoft POR V1.0 is a professional and powerful vehicle fault diagnosis tool for Porsche developed by iCarsoft Technology Inc. With a 2.8" TFT LCD and unique diagnostic software, it features full ECU diagnosis of single vehicle brand and test modes mainly include: CANBUS, ISO9141, KWP2000, and J1850 etc. It enables technicians to accurately diagnose complex problems.