Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Aids
During the ignition cycle DTC U2016:47 initially sets, the PSCM enters limp home mode and steering assist is gradually reduced until the PSCM enters manual mode. The PSCM sends a message to the IPC to display POWER STEERING ASSIST FAULT in the message center.
During the next ignition cycle after DTC U2016:47 sets, if the concern is still present, the PSCM removes steering assist and enters manual mode. The module also transmits an invalid steering angle message over the HS-CAN and sends a message to the IPC to display the POWER STEERING ASSIST FAULT in the message center.
When DTC U2016:48 is set, the PSCM remains in normal operation mode, but all steering features: Active Nibble Control, Pull-Drift Compensation, Evasive Steering Assist (ESA), Lane Departure Warning (LDW), Lane Keep Assist (LKA) and Lane Centering Assist (LCA) may be disabled.
| Failure | Action |
|---|---|
| 09 | GO to PINPOINT TEST BO. |
| 47 | GO to PINPOINT TEST BO. |
| 48 | GO to PINPOINT TEST BO. |
| 57 | GO to PINPOINT TEST BO. |
| 66 | GO to PINPOINT TEST BO. |
| 94 | GO to PINPOINT TEST BO. |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.