P0570
UniversalCruise Control Accel Signal Malfunction
The cruise-control system uses an acceleration input to request an increase in cruising speed. This code indicates that the system detected a problem with that signal; it does not by itself identify a failed part. Cruise control may not work as expected, while normal driving may be unaffected.
⚠️ Before You Begin (Safety First)
Do not rely on cruise control until the issue is diagnosed. If cruise control behaves unexpectedly, switch it off when safe and control the vehicle with the accelerator and brake. Stop in a safe place and seek assistance if you cannot maintain normal control of the vehicle.
Common Symptoms
- Cruise control may fail to engage or may not respond when the acceleration input is used.
- Cruise control may respond intermittently if the signal is intermittent.
- Cruise control may behave differently than commanded if the system receives an incorrect or unreliable input.
- There may be no noticeable symptom apart from a stored diagnostic code.
Common Causes
- A cruise-control acceleration switch or control input may have worn, damaged, or inconsistent contacts.
- A loose, corroded, damaged, or open connection in the relevant signal wiring may interrupt the input.
- A short or other wiring fault may distort the signal.
- A fault in a related cruise-control control unit or its electrical supply may affect signal interpretation.
Diagnostic Steps
- Check the owner’s manual for the cruise-control controls and any vehicle-specific warnings; do not test the system in traffic.
- With the vehicle safely parked, inspect accessible cruise-control buttons and nearby connectors for visible damage, looseness, or contamination.
- Check whether cruise-control functions work consistently under safe conditions, and note which control action does not respond. Do not keep testing if the system behaves unexpectedly.
- If you have a scan tool that supports the vehicle, record related codes and available cruise-control input data without clearing codes before documenting them.
- Have a qualified technician perform circuit testing or control-unit diagnosis if the fault remains; use model-, year-, and engine-specific service information.
When to Call a Professional
A technician can check for related codes, compare cruise-control switch commands with scan-tool data, and inspect the relevant wiring and connectors. Electrical tests and any component checks should follow the service information for the specific vehicle; the code alone does not prove the switch or another part needs replacement.
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Commonly Asked Questions
Does P0570 mean the acceleration switch must be replaced?
No. The code identifies a detected cruise-control acceleration-signal problem, not a confirmed failed part. The switch, wiring, connectors, or related control electronics may need checking.
Can I drive with this code?
If the vehicle otherwise drives normally, the main concern may be loss or unreliable operation of cruise control. Avoid using cruise control until the issue is diagnosed, and stop safely if vehicle control is affected.
Why might cruise control still work sometimes?
An intermittent switch contact, connector, or wiring fault can make the signal unreliable. Scan data and electrical checks can help distinguish an intermittent input from a persistent fault.
Does this code identify a specific switch location or test procedure?
No. The location, circuit design, and diagnostic procedure vary by vehicle. Model-, year-, and engine-specific service information is needed.
Browse Available Code Guides
Previous and next available guides in database record order, across makes. Adjacent entries may share a code number and do not necessarily describe related faults.