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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 187 ((Antilock Brake System (Abs) - Electrical Diagnostics)) >> DTC Troubleshooting >> C1239-Emission Rolls Test Active >> When Monitored

When Monitored

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

Continuously with the ignition on and the Totally Integrated Power Module (TIPM) has the Emissions Test Mode bit set.

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