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Old 07-21-2013, 12:08 PM   #1
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Code 4276

After the car sat for several months the battery went dead. After a slow charge it started right up but gave a code of 4276 on the Durametric. The ABS failure light and low brake fluid level lights are on. I tried to delete these codes with the Durametric but it will not communicate with the module. It reads the codes but I can not reset them. The brake system is in good condition, pads rotors etc. Fluid level is good. The 4276 code indicates a low voltage to one of the ABS valves. Battery voltages were good when checked with digital voltmeter. Also good when running so I think I have ruled out battery and alternator. I think it must be something electrical that was triggered by the battery going dead but so far no luck. Even tried disconnecting battery to attempt a reset. Unless it needs to be left unconnected for a longer time I could not get the codes to reset. Any thoughts?


ABS/PSM 5.7
Module Identification



Part Number 996.355.755.05
Supplier Part Number 12


Current Fault Codes

4276
Valve supply voltage
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Old 07-21-2013, 04:06 PM   #2
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Any chance of rodent damage?
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Old 07-22-2013, 02:32 AM   #3
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Haven't seen any signs of mice but we do have a lot of squirrels. Could not see any chewed or frayed wires. I am fairly convinced it had something to do with the battery going dead. Have been reviewing wiring diagrams in an attempt to track down the source of the codes.
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