For 1990-2009 cars

### DTC Descriptors

DTC B1001 00: Option Configuration Error (RPO Mismatch)

### Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

### Circuit/System Description

The instrument panel cluster (IPC) has an initial vehicle system programming error.

### Conditions for Running DTC

• | System voltage is between 9-16 volts.

• | Ignition switch is in the ON position.

### Conditions for Setting the DTC

The IPC is powered up prior to RPO programming.

### Conditions for Clearing the DTC

• | The condition for setting the DTC is no longer present.

• | The DTC can be cleared using a scan tool.

### Action Taken When the DTC Sets

The IPC will display a "Program with Scan Tool" message.

### Reference Information

#### Scan Tool Reference

Control Module References

### Circuit/System Testing

1. Ignition ON, using the scan tool, verify that DTC B1001 is not set as current.

⇒ | If DTC B1001 is set as current, attempt to re-calibrate the IPC.

2. Clear all DTCs using the scan tool, verify that DTC B1001 is no longer set as current.

⇒ | If DTC B1001 is still current. Replace the IPC.

### Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for IPC replacement, setup, and programming