Catalytic Converter System

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DTC Troubleshooting

DTC P0420: Catalyst System Efficiency Below Threshold NOTE: - Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see pa ...

See also:

Symptom Troubleshooting Index
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Receiving XM Radio Service
If your XM Radio service has expired or you purchased your vehicle from a previous owner, you can listen to a sampling of the broadcasts available on XM Radio. With the ignition switch in th ...

Climate Control Switch Communication Line Circuit Troubleshooting
1. Operate the climate control system with the passenger's climate control switch in all modes. Does the climate control system operate? YES-lntermittent failure. Check for loose wires or poor c ...