Engine-Codes - Generic - B1602

B1602 - PATS Received Invalid Format Of Key-Code From Ignition Key Transponder

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1602 Possible Causes

  • Faulty Passive Anti-Theft System (PATS) key
  • Faulty Powertrain Control Module (PCM)

How is the B1602 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the B1602 code

Labor: 1.0

The cost to diagnose the B1602 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1602 Meaning

During each vehicle start sequence, the transceiver reads the Passive Anti-Theft System (PATS) key identification code and circuit send the data to the Powertrain Control Module (PCM).

More Information

Need more information on how to fix the B1602 code?
Get Access to Factory Service Manuals

Information for specific makes

  • B1602 ACURA Keyless Access ECU EEPROM Error
  • B1602 CHRYSLER Left Solar Sensor Circuit High
  • B1602 DODGE Left Solar Sensor Circuit High
  • B1602 FORD PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
  • B1602 HONDA Keyless Access ECU EEPROM Error
  • B1602 JEEP Left Solar Sensor Circuit High
  • B1602 LINCOLN PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
  • B1602 MERCURY PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
  • B1602 RAM Left Solar Sensor Circuit High

Need more help?

Get the B1602 code diagnosed by a professional: Find a repair shop in your area