OBD code B1602 indicates a problem with the PATS key or PCM.
This affects the Passive AntiTheft System.
Symptoms include the Engine Light being ON.
The issue can be caused by a faulty key or PCM.
It’s crucial to address promptly.
To fix, inspect wiring, connectors, and components for damage or corrosion, focusing on the PATS system components.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the b1602 OBD Code
The vehicle displays an airbag warning light on the dashboard with fault code B1602 stored.
- Symptoms: Service Engine Soon Warning Light ON.
- Possible loss of communication with the vehicle immobilizer control module.
- Difficulty starting the vehicle.
- Engine stalling while driving.
- Difficulty shifting gears in an automatic transmission vehicle.
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Causes of the b1602 OBD Code
B1602 code typically indicates a communication error between the smart junction box and the restraint control module.
- B1602 can be caused by a faulty Passive AntiTheft System (PATS) key.
- A faulty Powertrain Control Module (PCM).
Fixing Error Code b1602 Step By Step
Address the issue by inspecting the driver’s airbag module circuit for fault code B1602.
- To fix OBDII code B1602, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the instrument cluster for any visible issues or malfunctions.
- Test the instrument cluster for proper operation and communication with the vehicle’s network.
- If no visible issues are found, consider reprogramming or replacing the instrument cluster as necessary.
Cost Of Fixing b1602 Fault Code
Diagnosing and repairing fault code B1602 may involve checking the vehicle’s airbag system components.
The cost to diagnose and fix OBD code B1602 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour.
The total cost will vary based on shop rates, complexity of the issue, and any additional parts or services needed.
Details of the b1602 OBD Code
B1602 code indicates a problem with the immobilizer system in the vehicle.
OBD code B1602 means PAT System Performance.
This code is triggered by the Passive AntiTheft System (PAT) module when it detects a performance issue within the system.
The PAT system is designed to prevent the vehicle from being started without the correct key.
When the B1602 code is set, it indicates that there is a fault in the PAT system that is affecting its performance.
This could be due to issues with the key, the ignition lock cylinder, the transceiver, or other components related to the PAT system.
In summary, OBD code B1602 relates to a performance problem in the Passive AntiTheft System (PAT) of the vehicle.
Mechanic’s Tech Notes
Code B1602 indicates an immobilizer key mismatch in the vehicle’s security system.
To diagnose and fix OBDII code B1602, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) network with a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, and check connector pins for signs of being broken, bent, pushed out, or corroded.
This thorough inspection can help identify and resolve the issue causing the B1602 fault code.
FAQ
OBD code B1602 indicates a fault in the Passive AntiTheft System (PATS) key or Powertrain Control Module (PCM). Check wiring, connectors, and components for damage.
Common symptoms for OBD code B1602 include Engine Light ON, caused by a faulty PATS key or PCM. Fix: Inspect wiring, connectors, and components for damage or corrosion.
Diagnose OBD code B1602 by checking for a faulty PATS key or PCM. Inspect wiring harness, connectors, and pins for damage. Repair as needed.
Wrap Up
If your vehicle is displaying OBD code b1602, you may experience issues with the passenger airbag indicator light not functioning properly.
This could be caused by a faulty passenger airbag indicator circuit or a defective passenger airbag indicator sensor.
To address OBD code b1602, start by checking the wiring harness and connectors related to the passenger airbag indicator system.
Look for any signs of damage, corrosion, or loose connections.
If no visible issues are found, consider testing or replacing the passenger airbag indicator sensor to resolve the problem effectively.
