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abs fault codes - what to check

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YOUR RESEARCHabs fault codes - what to check

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Test sensors is unplug all 4

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Suggestion

Old school way of testing the sensors is unplug all 4.

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abs fault codes - what to check
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Leading evidence: 'Test sensors is unplug all 4' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test sensors is unplug all 4' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Test sensors is unplug all 4

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Suggestion

Old school way of testing the sensors is unplug all 4.

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abs fault codes - what to check
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POST 1 / ORIGINAL POSTEROriginal post

My abs light is on so pulled the codes and got 4211, 4201, 4216 - 3 wheel sensor codes triggered. My indy wants to r&r the abs control module - having it rebuild. Could it be possible that 3 sensors went bad? The cruise control works and I thought it would become inoperable with an abs code. What is the best way forward from here? This is for a 2001 996.

POST 2Original post

Would be prudent (and way less expensive) to address the wheel sensors first. Do a search on this forum for "looping" the sensor wires together and zip-tie them out of the way. Clear codes and see if the ABS light stays off.

POST 3 / ORIGINAL POSTEROriginal post

Will check this out first - strange they show a fault but the cruise control still works - thought it was to shut off when there is an abs issue?

POST 4Original post

If the brake light switch fails not the wheel speed sensors, then CC cannot be activated. Old school way of testing the sensors is unplug all 4. Then re-connect a single sensor. Start car and drive away to 10mph or faster. If the ABS light comes on, then the sensor is OK. If the abs light stays off, then sensor is bad. Disconnect this sensor, connect the next one and repeat for all sensors. Each time you test, you want only one single sensor connected.

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