Skip to content
GTECH Calibration
Portal

P1572

ASR Active Circuit Low Too Long.

  • Chrysler
  • Powertrain
  • Manufacturer code
  • Medium severity

How this code is built

P
SystemPowertrain
1
Defined byThe manufacturer
5
AreaVehicle speed, idle control and auxiliary inputs
72
FaultThe specific fault in that area

What it means

On Chrysler, P1572 means the engine control unit saw the ASR (traction control) active circuit held low for longer than it should be. This signal normally tells the engine controller when the ABS/traction control module is intervening, so a line stuck low suggests a wiring fault or a fault in one of the modules. The exact circuit layout and module names vary by model and year, so check the wiring information for the vehicle.

Symptoms

  • Engine warning light on with P1572 stored
  • Traction control or ABS warning light on, or traction control inactive
  • Traction control seems to cut in when it should not
  • Reduced power or hesitation as engine torque is limited
  • Possible poor or erratic acceleration on slippery surfaces

Possible causes

  • ASR active signal wire shorted to ground or chafed against the bodylikely
  • Corroded, loose or damaged connector at the engine control unit or ABS/traction control modulelikely
  • Faulty ABS/traction control module holding the ASR signal lowpossible
  • Wheel speed sensor or related fault making the traction system think it must intervene constantlypossible
  • Water ingress or damage to the harness after previous repair or accident workpossible
  • Internal fault in the engine control unit input circuitrare

How to diagnose

  1. Read all stored codes and freeze frame data, and note any ABS or traction control codes alongside P1572
  2. Check for related wheel speed sensor or ABS codes and deal with those first as they may be the root cause
  3. Visually inspect the harness and connectors between the engine control unit and ABS/traction control module for chafing, corrosion, water and pin damage
  4. Using the wiring diagram for the model, identify the ASR active circuit and check it for a short to ground with the connectors disconnected
  5. Check the live data for the traction control active status and see whether it stays on with the vehicle stationary
  6. Check the voltage on the signal circuit at both ends with the ignition on and compare it with the wiring information
  7. Check power and earth supplies to the ABS/traction control module
  8. If wiring tests good, test or substitute the suspect module following the manufacturer's procedure

How to fix

  • Repair or replace any wiring that is shorted to ground, chafed or damaged
  • Clean or replace corroded or damaged connectors and terminals
  • Repair any wheel speed sensor or ABS fault that is causing constant traction control activation
  • Repair or replace the ABS/traction control module if it is confirmed as holding the line low
  • Replace or repair the engine control unit only if the fault is confirmed in its input circuit, then clear codes and road test

Can I keep driving?

Medium severity

The car can usually be driven with care for a short time, but traction control and possibly ABS may not work, so take extra care on wet or slippery roads. Get it checked soon, especially if the ABS warning light is also on.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.

This code for other makes

Nearby codes