What Does P1662 Mean?
The powertrain control module (PCM) has detected an abnormal signal in the power steering assist output circuit. This code indicates a communication or control issue between the PCM and the electric power steering system.
Common Causes
35%
Faulty electric power steering control module or internal circuit failure
30%
Damaged wiring harness or corroded connectors between PCM and power steering system
20%
Defective power steering motor or actuator
15%
PCM internal fault or software issue
Diagnostic Steps
1
Step 1: Perform visual inspection of all wiring and connectors between PCM and power steering control module for damage, corrosion, or loose connections
2
Step 2: Use scan tool to monitor live data from power steering system, checking for communication errors and voltage readings
3
Step 3: Test power steering control module power and ground circuits with multimeter, verify proper voltage supply
4
Step 4: Check for technical service bulletins (TSBs) related to power steering module or PCM software updates
5
Step 5: Perform resistance and continuity tests on signal circuits between PCM and power steering module
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The powertrain control module (PCM) has detected an abnormal signal in the power steering assist output circuit. This code indicates a communication or control issue between the PCM and the electric power steering system.
The most common cause of P1662 (Power Steering Output Circuit Malfunction) is: Faulty electric power steering control module or internal circuit failure
Typical repair costs for P1662 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Reduced or loss of power steering assist may occur, making vehicle harder to steer especially at low speeds. Vehicle remains drivable but requires increased steering effort.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1662 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
Power Steering System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
