Error code P0573 is displayed and the check engine light is on - what does this mean?
The OBD/EOBD system has detected a fault in the cruise control system, more precisely a problem with the cruise control input signal. This DTC P0573 indicates a fault in the communication between the cruise control switch and the engine control unit. This error code may have slightly different names for different manufacturers, but always refers to the cruise control system.
What causes can this error code have?
- Defective cruise control switch on the steering wheel
- Damaged wiring to the cruise control system
- Loose or corroded plug connections
- Defective engine control unit (ECM/PCM)
- Interrupted ground wire of the cruise control system
- Short circuit in the circuit wiring
- Defective fuse in the cruise control system
- Faulty clockspring unit (slip ring)
What symptoms occur in parallel with fault code P0573?
- Cruise control does not work: The cruise control system cannot be activated or deactivates spontaneously
- Check engine light: The check engine light is permanently illuminated
- Lack of response: Cruise control switches do not respond to actuation
- Intermittent function: Cruise control only works sporadically
- Other steering wheel functions affected: Other switches on the steering wheel may fail
How can the problem with error code P0573 be resolved?
- Various repair approaches are possible to rectify this trouble code, which can be used depending on the cause.
- Replace the cruise control switch on the steering wheel completely and have a new unit programmed
- Check the wiring of the cruise control system and repair or replace damaged cables
- Clean and tighten all cruise control system plug connections and treat with contact spray
- Check the cruise control system fuses and replace defective fuses
- Replace and calibrate the clockspring unit (slip ring) under the steering wheel
- Diagnose engine control unit and replace or reprogram if defective
- Locate, clean and properly secure the system's ground cable
FAQ - Frequently asked questions about DTC P0573
Can I continue driving with error code P0573?
Yes, the vehicle can still be driven, as error code P0573 only affects the cruise control system. The engine and other important systems will continue to function normally, but the cruise control function will not be available.
How much does it cost to repair error code P0573?
The repair costs vary depending on the cause: a new cruise control switch costs around 150-300 euros, cable repairs 100-200 euros, and a new clockspring unit 200-400 euros. The working time is usually 1-3 hours.
How can I diagnose fault code P0573 myself?
You can read and delete the code using an OBD scanner. First check all fuses, test the cruise control switches for function and check visible cable connections for damage.
Does fault code P0573 reappear after deletion?
If the root cause has not been rectified, this EOBD code will return. A successful repair is indicated by the fact that the code is not saved again after several driving cycles.
What tools do I need to repair P0573?
You will need an OBD scanner for diagnostics, standard tools for repairs, a multimeter, possibly a steering wheel removal tool and special alignment tools for clockspring changes.
Is fault code P0573 a common problem?
Yes, this fault code occurs particularly in older vehicles, as cruise control switches and the clockspring unit wear out through frequent use and the wiring can corrode over time.
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