ABS C0550-00 - Pontiac G8 Forum

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buckylic1ous B Does anyone know what this means? #1 · Jan 8, 2021 Does anyone know what this means? See less See more 1 Sort by Oldest first Oldest first Newest first Most reactions #2 · Jan 8, 2021 Check ABS control module or wheel speed sensors maybe. #3 · Jan 8, 2021 Newbie/introduction forum. Code could represent an issue with the traction control/abs module. #4 · Jan 8, 2021 The service manual says that the ECU has detected an internal fault condition when power up was commanded. That circuit is looking for a power source an ground. It says it will run this test even if the power source is out of range (which I take as meaning that the power is either lower or higher than expected). It "does not" appear that this fault is reset-able. If you were to have a current an history fault displayed, it says to replace the module. It says "do not" replace the module if only a history DTC (like you show) is present. The history DTC clears when the module ignition cycle counter reaches the reset threshold of 50 without a repeat of the malfunction. It says this condition does not affect the normal operation of the module itself. If it was a one time anomaly (fancy word), it might/should just go away if all the continued required ignition cycles produce the proper voltage an ground data as expected. Insert Quotes Post Reply

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