Knowledge Hub
Decoded by engineers,
verified by technicians.
888 guides, repair insights and product knowledge from the iCarsoft Technical Team.
Tech Center & Insights
P064A Code: Fuel Pump Control Module — Causes & Fix
P064A points to a Fuel Pump Control Module fault. Learn the causes, why Ford connectors are often to blame, and how to fix hard s…
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P0143 Code: O2 Sensor Low Voltage (Bank 1, Sensor 3) Fix
P0143 means low voltage from O2 Sensor 3 on Bank 1. Learn the causes, why an exhaust leak is often to blame, and how to fix it be…
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P260F Code: EVAP System Monitoring Processor — Causes & Fix
P260F is an internal PCM fault that blocks the EVAP monitor — not a leak. Learn why it fails emissions and how a software reflas…
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P0689 Code: ECM/PCM Power Relay Sense Circuit Low — Fix
P0689 signals low voltage on the ECM/PCM power relay sense circuit. Learn causes, symptoms, and how to fix hard starts or stallin…
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P2504 Code: Charging System Voltage High — Causes & Fix
P2504 means your charging system voltage is too high (overcharge). Learn the causes, diagnostic steps, and repair costs — don't d…
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P0544 Code: EGT Sensor Circuit Bank 1 Sensor 1 — Diesel Fix
P0544 is an EGT sensor circuit fault on diesels. Fix promptly to avoid $2,500+ turbo/DPF damage. Common on Powerstroke, Duramax, …
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P0870 Code: Transmission Fluid Pressure Sensor C Circuit Fix Guide
P0870 means transmission pressure sensor circuit fault. Common on Chevy Silverado, Tahoe. Fix fluid first, sensor second — most c…
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P2762 Code: TCC Pressure Control Solenoid B Range/Performance Fix
P2762 indicates TCC pressure control solenoid fault. Start with fluid service — many cases resolved without expensive solenoid re…
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P0176 Code: Fuel Composition Sensor Circuit — Flex Fuel Fix Guide
P0176 is a flex fuel (E85) sensor circuit fault on FFV vehicles. Check Ford TSB for water intrusion — often a $0 fix instead of $…
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P2190 Code: System Too Rich at Idle Bank 2 — Causes &amp Fix
P2190 indicates rich fuel mixture on Bank 2 at idle. Common on V6/V8 engines. Compare bank-to-bank fuel trims to isolate the caus…
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P2174 Code: Throttle Actuator System — Sudden Low Airflow Fix
P2174 means sudden airflow drop detected by PCM. Most cases resolved by air filter, MAF cleaning, or throttle body service for un…
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P0626 Code: Generator Field/F Terminal Circuit High — Fix Guide
P0626 indicates alternator field control circuit fault. Critical to fix — overcharging can destroy electronics. Learn causes, dia…
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P2471 Code: EGT Sensor Circuit High Bank 1 Sensor 4 — Diesel Fix
P2471 indicates a high-voltage fault on EGT Sensor 4. Fix promptly to avoid $2,500+ DPF damage. Learn the causes, diagnostic step…
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P0023 Code: Exhaust "B" Camshaft Actuator Circuit Bank 2 Fix
P0023 indicates a VVT exhaust solenoid fault on Bank 2. Learn why oil quality is the #1 cause, diagnostic steps, and how to avoid…
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Tech Center & Insights
P0A08 Code: DC/DC Converter Status Circuit (Hybrid Fix Guide)
P0A08 indicates a fault in the hybrid DC/DC converter. Learn why aux battery is often the actual cause — and how to avoid a $2,50…
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P2226 Code: Barometric Pressure Sensor "A" Circuit — Fix Guide
P2226 means your BARO sensor circuit is out of range. Learn the causes, symptoms, diagnostic steps, and repair costs — often a si…
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P0864 Code: TCM Communication Circuit Range/Performance Fix
P0864 means your TCM and PCM aren't communicating properly. Learn the causes, symptoms, diagnostic steps, and repair costs — ofte…
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P0028 Code: Intake Valve Control Solenoid Bank 2 — VVT Fix Guide
P0028 means your Bank 2 intake VVT system isn't responding. Most cases fixed with an oil change. Learn the causes, symptoms, diag…
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P0502 Code: Vehicle Speed Sensor A Circuit Low Input Fix Guide
P0502 means your PCM detected low voltage from the vehicle speed sensor. Learn the causes, symptoms, diagnostic steps, and repair…
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P0142 Code: Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 3
P0142 means low voltage from your downstream O2 sensor. Learn the causes, symptoms, diagnostic steps, and repair costs to fix thi…
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P2413 Code: Exhaust Gas Recirculation System Performance Fix
P2413 means your EGR system isn't delivering commanded exhaust flow. Learn the causes, symptoms, diagnostic steps, and repair cos…
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P24AE Code: Particulate Matter Sensor Circuit – Causes & Fix Guide
P24AE means a Particulate Matter sensor circuit fault on diesel vehicles. Learn the causes, symptoms, diagnosis steps, and repair…
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P2682 Code: Engine Coolant Bypass Valve "A" Control Circuit Low Fix
P2682 means low voltage in your coolant bypass valve circuit. Learn the causes, symptoms, and how to fix it to prevent engine ove…
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P2637 Code: Torque Management Feedback Signal "A" Causes & Fixes
Experiencing harsh shifting and a P2637 code? Read our complete guide to understand Torque Management Feedback Signal faults, sym…
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