What Does P0570 Mean?
The ECM has detected a malfunction in the cruise control ACCEL (accelerate) signal circuit. The ACCEL function allows the driver to incrementally increase the set cruise speed. The ECM is not receiving a valid ACCEL command when the driver presses the ACCEL or RESUME/ACCEL button, preventing upward speed adjustment while cruise is engaged.
Common Causes
40%
Worn cruise control ACCEL switch contacts in the multi-function stalk or steering wheel button module
25%
Open or corroded wiring in the ACCEL signal circuit between the switch and ECM
25%
Clock spring failure interrupting the ACCEL signal path from the steering wheel to the column harness
10%
Incorrect resistance in the ACCEL position of the cruise control resistive-ladder switch network
Diagnostic Steps
1
Step 1: With cruise control engaged on a safe road, press the ACCEL button and observe whether the set speed increases on the display. If no change occurs, the ACCEL signal is not reaching the ECM.
2
Step 2: Monitor the cruise control input voltage at the ECM while pressing ACCEL. The voltage should shift to the level specified for the ACCEL command. No change confirms a circuit fault.
3
Step 3: Measure resistance at the cruise control switch connector in the ACCEL position. Compare to the manufacturer's specification. The ACCEL position resistance must be within the ECM's acceptance window.
4
Step 4: Test the clock spring for continuity on the ACCEL signal wire while rotating the steering wheel through its full range. Document any dropout positions.
5
Step 5: If the switch and clock spring test good, inspect intermediate connectors and the ECM connector for corrosion or backed-out pins that could add resistance to the circuit. Replace faulty components and verify all cruise functions.
Estimated Repair Cost
$40 - $350
Parts + labor, varies by vehicle and location
The ECM has detected a malfunction in the cruise control ACCEL (accelerate) signal circuit. The ACCEL function allows the driver to incrementally increase the set cruise speed. The ECM is not receiving a valid ACCEL command when the driver presses the ACCEL or RESUME/ACCEL button, preventing upward ...
The most common cause of P0570 (Cruise Control Accel Signal Malfunction) is: Worn cruise control ACCEL switch contacts in the multi-function stalk or steering wheel button module
Typical repair costs for P0570 range from $40 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of the ACCEL function prevents the driver from increasing the set cruise speed using the button. The driver can cancel cruise and re-set at a higher speed as a workaround. No safety concern exists.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0570 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Cruise Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
