DTC Jeep U1428 Short Explanation

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The video focuses on the basic Jeep specific diagnostic error code. • Contents: • 0:21 Basic DTC analysis according to OBD2 protocol standard. • 1:48 Insight into programming • an explanation of what a bit is and how a byte is formed • decoding the Error Code to the base programming • 2:58 A diagnostically understandable description of the Diagnostic Trouble Code • 3:05 Basic error definition • Possible causes or errors of the car and its parts describing the mentioned error • • We will continue to work on improving the content. • Our efforts at Maxidot s.r.o.the video content gets better. • • #maxidot #dtc #howto #diagnostictroublecode #jeep • • • • • Make: • Jeep • Code: • U1428 • Definition: • A or F Sensor Circuit Slow Response (Bank 1 Sensor 1) • Description: • Monitor runs whenever following DTCs are not present: P0016, P0018 (VVT system bank 1, 2 - misalignment) P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment) P0031, P0032, P0051, P0052 (A or F sensor heater) P0102, P0103 (MAF meter) P0110, P0112, P0113 (IAT sensor) P0115, P0117, P0118 (ECT sensor) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (TP sensor) P0125 (Insufficient ECT for closed loop) P0128 (Thermostat) P0171, P0172, P0174, P0175 (Fuel system) P0301, P0302, P0303, P0304, P0305, P0306 (Misfire) P0335 (CKP sensor) P0340 (CMP sensor) P0451, P0452, P0452 (EVAP system) P0500 (Vehicle speed sensor) P0505 (Idle speed control) Active A or F control: Performing Battery voltage: 11 V or more ECT: 167°F (75°C) or more Idle: OFF Engine rpm: Less than 4000 rpm A or F sensor status: Activated Fuel cut: OFF Engine load: 10-70% Shift position: 2 or more Catalyst monitor: Not yet MAF: 2.5-15 g or sec • Cause: • Open or short in A or F sensor (sensor 1) circuit A or F sensor (sensor 1) A or F sensor (sensor 1 ) heater EFI relay A or F sensor heater and EFI relay circuits Air induction system Fuel pressure Injector PCV valve and hose PCV hose connection ECM

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