P0575
UniversalCruise Control Input Circuit
The cruise control input circuit carries driver-control signals to the vehicle’s control system. This code indicates that the system detected a problem with that circuit; it does not prove that a particular part has failed. Cruise control may be unavailable or respond inconsistently. Exact operation and diagnostic steps depend on the vehicle’s model, year, and engine.
⚠️ Before You Begin (Safety First)
If cruise control behaves unexpectedly or cannot be cancelled, use the brake if needed and pull over when it is safe. Do not use cruise control until the issue is diagnosed. If the vehicle otherwise operates normally and cruise control is switched off, ordinary driving may be possible; stop driving if you cannot control the vehicle’s speed safely.
Common Symptoms
- Cruise control may not set or may be unavailable because the control system is not receiving an expected input.
- Cruise controls may respond inconsistently if the input signal is intermittent.
- There may be no noticeable symptoms if the fault does not affect normal vehicle operation and cruise control is not being used.
Common Causes
- A cruise control switch or its electrical contacts may fail to provide a consistent input.
- Wiring or a connector in the input circuit may be loose, damaged, corroded, or making intermittent contact.
- A problem with the circuit’s power, ground, or signal path may disrupt the input.
- The control system may have an input-processing fault; testing is needed before attributing the code to a module.
Diagnostic Steps
- Note when the code appeared and whether cruise control stopped working or responded inconsistently; this helps guide diagnosis.
- With the vehicle parked safely, check the owner’s manual for the cruise control operating instructions and confirm the controls are being used as described.
- With the ignition off, visually inspect accessible cruise-control switch areas and wiring for obvious damage or loose connectors. Do not remove steering-wheel parts or disturb airbag wiring.
- If a suitable scan tool is available, record the code and check whether cruise-control input data changes as the controls are operated, following the tool and vehicle instructions.
- If the code returns, the input data is inconsistent, or steering-wheel or airbag-area work appears necessary, arrange diagnosis using vehicle-specific service information.
When to Call a Professional
A technician can compare cruise-switch input data with the controls being operated, inspect the relevant wiring and connectors, and test the circuit using vehicle-specific service information. The code alone does not identify which component, if any, needs replacement. Steering-wheel work may involve airbag components; leave that work to a qualified technician.
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Commonly Asked Questions
Does P0575 prove that the cruise control switch is bad?
No. The code identifies a detected problem in the cruise control input circuit. A switch, wiring, connector, power or ground path, or control-system input could be involved; testing is needed to distinguish them.
Can I drive with this code?
If the vehicle operates normally and cruise control is switched off, ordinary driving may be possible. Do not use cruise control if it behaves unexpectedly, and stop driving if you cannot control speed safely.
Why might there be no obvious symptoms?
The fault may affect only cruise-control operation, so it may not change how the vehicle drives when cruise control is not in use.
What helps distinguish a switch fault from a wiring fault?
A technician can compare scan-tool input data with switch operation and test the relevant circuit and connections using the vehicle-specific wiring information.
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