Here in Canada I recieved a TSB for reprogramming for the ABS system.
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Well mine just came back from the shop today for the same problem. This was what they wrote on the work order (stored code C121A 92 Key cycles ago and 5K miles steering angle sensor not initialized. Has initialized itself since.) Don't know if that makes any sense to anyone. 
Steering Angle Sensor
Thought some members here might find it interesting to see what the steering angle sensor looks like. The sensor is incorporated in the clockspring which mounts behind the steering wheel. The picture attached is the clockspring disassembled, just showing the SAS.
What's interesting to see is what is causing these sensors to fail. If you look closely at the light pipe there are tiny white specks visible. This debris is created by the code wheel rubbing on the light pipe. The debris which ends up on the camera limits its ability to read the steering wheel location causing intermittent DTC's or failure of the sensor.
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Thought some members here might find it interesting to see what the steering angle sensor looks like. The sensor is incorporated in the clockspring which mounts behind the steering wheel. The picture attached is the clockspring disassembled, just showing the SAS.
What's interesting to see is what is causing these sensors to fail. If you look closely at the light pipe there are tiny white specks visible. This debris is created by the code wheel rubbing on the light pipe. The debris which ends up on the camera limits its ability to read the steering wheel location causing intermittent DTC's or failure of the sensor.
So is this what is causing all the intermittent problems reported by the folks in this thread?Thought some members here might find it interesting to see what the steering angle sensor looks like. The sensor is incorporated in the clockspring which mounts behind the steering wheel. The picture attached is the clockspring disassembled, just showing the SAS.
What's interesting to see is what is causing these sensors to fail. If you look closely at the light pipe there are tiny white specks visible. This debris is created by the code wheel rubbing on the light pipe. The debris which ends up on the camera limits its ability to read the steering wheel location causing intermittent DTC's or failure of the sensor.
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Is this sensor used in any other Mopar or Jeep vehicles? Is there an improved sensor to replace this bad design?
That particular sensor came out of a 2006 Jeep Liberty. It is also shared with the Durango. I don't recall the part number. The parts lookup show they are different part numbers, the Liberty and Nitro. However, Chrysler seems to like renumbering parts.
I cannot say this is the cause for the problems members here are experiencing. Each individual owners issue needs to be properly diagnosed by his/her dealer.
Also a lot of parts crossover so this problem could exist in the Nitro if it is the same design.
I cannot say this is the cause for the problems members here are experiencing. Each individual owners issue needs to be properly diagnosed by his/her dealer.
Also a lot of parts crossover so this problem could exist in the Nitro if it is the same design.
Are these SAS units subject to malfunction due to condensastion on the optical parts?That particular sensor came out of a 2006 Jeep Liberty. It is also shared with the Durango. I don't recall the part number. The parts lookup show they are different part numbers, the Liberty and Nitro. However, Chrysler seems to like renumbering parts.
I cannot say this is the cause for the problems members here are experiencing. Each individual owners issue needs to be properly diagnosed by his/her dealer.
Also a lot of parts crossover so this problem could exist in the Nitro if it is the same design.
I know that condensation caused problems in Chevies with the Optispark ignition which had an optical trigger--and shutter wheel similar to this.
If so that could explain the intermittent problems
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