Problem Reports
Problem with your car? See what our experts say or submit your own.
2004 Isuzu Ascender Problems
Check Engine Light on Due to AIR System Fault
The Check Engine Light may illuminate due to a failure of the secondary air injection system (AIR) system. Possible faults include the air pump, relay, solenoid, and 02 sensor. Our technicians recommend complete system diagnoses before replacing any parts.
Check Engine Light with code P0606
The Check Engine Light may illuminate with a code P0606 stored. Our technicians tell us updating the powertrain control module (PCM) software will generally correct this concern.
Check Engine Light with codes P0171 & P0172
The Check Engine Light may illuminate with codes P0171 and P0172 stored. Our technicians tell us reprogramming the powertrain control module (PCM) and replacing the fuel pump may be necessary to correct this concern.
Engine will not crank due to blown fuse
A no crank condition may occur and the IGN E fuse is blown. If this occurs our technicians recommended 3 places to inspect for wiring issues: Under the sill place at the drivers side rear door opening, along the steering column, and near the brake pedal bracket. Damaged wires will require repair and should be repositioned and protected from further damage.
Squeak type noise noted upon break apply
A squeak noise may be noted upon brake apply. If basic brake inspection procedures don't reveal any faults, our technicians recommend flushing the DOT 3 brake fluid and replacing it with Delco Supreme 11 fluid to correct this concern.
The transfer case position sensor may fail
The 4WD warning message may be displayed with a code C0327. The transfer case position sensor is commonly at fault and will require replacement.
The horn may not work at times
The horn may not function at times due to a faulty ground circuit in the steering column. Our technicians tell us that adding a ground strap between the upper and lower steering column mounting points will commonly correct this issue.
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