LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1383 (1.3L - DTCS U0164 To U1504) >> DTC Troubleshooting >> U02A9-Lost Communication With Charge Air Cooler Coolant Pump >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
BATTERY VOLTAGE OR CHARGING SYSTEM FAULTS
FUSED B(+) CIRCUIT OPEN/HIGH RESISTANCE
GROUND CIRCUIT OPEN/HIGH RESISTANCE
LIN BUS CIRCUIT SHORTED TO VOLTAGE
LIN BUS CIRCUIT SHORTED TO GROUND
LIN BUS CIRCUIT OPEN/HIGH RESISTANCE
AUXILIARY COOLANT PUMP
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .