Electrical System Fault Analysis Cases
Complete database of electrical system problems including battery issues, charging system failures, lighting problems, and sensor diagnostics.
Browse by Specific Problem
2005 SAAB 9-3 Battery Leakage Issue
2005 SAAB 9-3
The owner of a 2005 Saab 9-3 Linear sedan is experiencing issues with a leaky battery. The battery is showing signs of leakage, which could potentiall...
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2006 Toyota Tundra Gauge Cluster Backlight Issues
2006 Toyota Tundra
The gauge cluster backlight and A/C knob lights on my 2006 Toyota Tundra are completely out. I tried adjusting the dimmer switch and checking the fuse...
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2006 Kia Optima Charging Problem Diagnosis
2006 Kia Optima
The owner of a 2006 Kia Optima reports that the alternator, although verified to be new and functional, is not charging the battery. Despite testing, ...
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2006 Saturn Ion Horn Not Blowing
2006 Saturn Ion
The owner reports that the horn on their 2006 Saturn Ion does not produce any sound when pressed. They have attempted to locate the fuse panel and hor...
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2008 Pontiac Wave Front Headlight Wiring Issue
2008 Pontiac Wave
The owner reports that the front headlights of their 2008 Pontiac Wave are malfunctioning. The dealership advised that the wiring harness needs replac...
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2005 Chevy Equinox Fuse Keeps Blowing, No Start Issue
2005 Chevrolet Equinox
The owner of a 2005 Chevy Equinox reports recurring issues with a blown fuse that controls the backup lights. Each time they attempt to start the vehi...
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Orange Warning Light Diagnosis on 2007 Ford Fiesta
2007 Ford Fiesta
The owner of a 2007 Ford Fiesta reports seeing an orange warning light featuring an exclamation mark on the dashboard. They have run diagnostics multi...
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2005 Chevrolet Avalanche Headlight Mystery
2005 Chevrolet Avalanche
The owner reports that the high beams of their 2005 Chevrolet Avalanche activate when the ignition is turned off, regardless of daytime or nighttime c...
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2007 Chevy Trailblazer Interior Electrical Issue
2007 Chevrolet Trailblazer
The owner reports intermittent electrical issues with their 2007 Chevy Trailblazer. Specifically, the interior lights flicker and sometimes turn off c...
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2006 Jeep Cherokee Fog Light Diagnostics
2006 Jeep Cherokee
The owner of a 2006 Jeep Cherokee reports that the fog lights are not functioning. They initially did not have a relay or fuse in position #15, which ...
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2005 Subaru Legacy Backup Lights Electrical Issue
2005 Subaru Legacy
The owner of a 2005 Subaru Legacy (non-turbo, automatic) reports that the backup lights are not functioning. They've replaced fuses #18 and #8, and ch...
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2006 Pontiac Grand Prix Trunk Won't Open Diagnosis
2006 Pontiac Grand Prix
The owner of a 2006 Pontiac Grand Prix reports that the trunk won't open. This issue occurs intermittently and seems to have started after some previo...
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Headlight Wiring Issues Diagnosis
2005 Suzuki Forenza
The owner of a 2005 Suzuki Forenza is experiencing complete loss of headlight functionality, while bright lights and parking lights are operational. T...
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Intermittent A/C Issue in 2007 Volvo S40
2007 Volvo S40
The owner reports that the A/C in their 2007 Volvo S40 works intermittently, stopping unexpectedly. They have performed all basic A/C services, indica...
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Crankshaft Position Sensor Location for 2008 Kia Optima
2008 Kia Optima
The owner is seeking the exact location for the crankshaft position sensor on a 2008 Kia Optima engine installed in a 2006 body. They have a DTC relat...
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2006 Chrysler PT Cruiser P0562 Voltage Issues
2006 Chrysler PT Cruiser
The owner of a 2006 Chrysler PT Cruiser reports that the vehicle experiences electrical issues, specifically low voltage readings. They measured the v...
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2008 Saturn Astra AC Compressor Diagnosis
2008 Saturn Astra
The AC compressor in my 2008 Saturn Astra failed in June 2013. I bought an AC Delco compressor and receiver/drier from Rock Auto, which my usual mecha...
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2006 Mitsubishi Galant P0421 Diagnostic Analysis
2006 Mitsubishi Galant
The owner reports a persistent check engine light on their 2006 Mitsubishi Galant after replacing the catalytic converter. They suspect that an oxygen...
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