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Home >> Lexus >> 2006 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Navigation System - Diagnostics) >> DTC 01-21, 01-22: ROM Error; Ram Error >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION CONDITION TABLE

DTC No. DTC Detection Condition Trouble Area
01-21 A malfunction exists in ROM. Radio and navigation assembly
01-22 A malfunction exists in RAM.
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