Learn about the P0644 diagnostic trouble code affecting OBD-II vehicles. Understand its causes, symptoms…
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Month: October 2025
P0645 A/C Clutch Relay Control Circuit
Learn about the OBD-II code P0645, indicating an A/C clutch relay control circuit issue in vehicles like GM, Ford, and Jeep. Find causes and repair tips here.
Read more....P0646 Low Clutch Control Relay Circuit
Troubleshoot P0646 code for your vehicles A/C clutch relay circuit. Learn causes, symptoms, and repair steps for GM, Ford, Chrysler models.
Read more....P0647 High Clutch Relay Control Circuit
Learn about the P0647 code meaning: a high voltage issue in your A/C clutch relay control circuit, affecting GM, Ford, and more.
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P0648 Immobilizer Lamp Control Circuit
Learn about the P0648 code meaning: a generic DTC indicating an immobilizer lamp control circuit malfunction in OBD-II vehicles like Ford, Honda, and more.
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P0649 Cruise Control Indicator Lamp Control Circuit
Learn about P0649 code meaning: a generic OBD-II trouble code indicating cruise control indicator lamp circuit malfunction in vehicles from 1996 onward.
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Fuel Pump Control Module
Troubleshoot P064A code: PCM detected malfunction in Fuel Pump Control Module. Learn diagnosis for Chrysler, Ford, GM & Mercedes OBD-II vehicles (1996+).
Read more....P064B PTO Control Module
Learn about the P064B diagnostic trouble code, a generic OBD-II issue affecting PTO control modules in vehicles like Chrysler, Ford, and Toyota.
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P064C Glow Plug Control Module
Discover the meaning of P064C code, a generic OBD-II issue affecting glow plug control modules in diesel engines.
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P064D Internal Control Module O2 Sensor Performance Processor Bank 1
Learn about the P064D code: an internal control module O2 sensor performance issue for Bank 1, its causes, and repair steps for OBD-II vehicles like Ford…
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