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C0550/abs, esc off, service stability

Old 12-20-2018, 03:50 PM
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C0550/abs, esc off, service stability

Hey guys. Got to work and parked the Cobalt no problems. Started it to go home all those lights came on as soon as the vehicle started moving. Local place scanned it and said its throwing c0550. Anyone seen something like this? No work done at all recently. Been being driven daily with no problems. 09 lnf sedan. Thanks in advance.
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Old 12-21-2018, 01:33 AM
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C0550
Electronic Control Unit (ECU) Performance
EBCM, EPS, PSCM
DTC C0550
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Old 12-29-2018, 09:39 PM
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My guess would be that there are additional DTCs in other modules. C0550 sets when the ABS condemns it’s own logic due to low voltage/poor ground or conflicting data from other sources. I’d recommend performing on demand self tests on all modules to see if any additional DTCs are setting. If not, load test the ABS module power and ground circuits to check for wiring damage.
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