DTC B1D7B Jeep
Oxygen (A F) Sensor Signal Stuck Rich (Bank 1 Sensor 1)
Oxygen (A F) Sensor Signal Stuck Rich (Bank 1 Sensor 1)
Description
The monitor will run whether these 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 F sensor heater) P0102, P0103 (MAF meter) 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) P0451, P0452, P0453 (EVAP system) P0500 (Vehicle speed sensor) P0505 (Idle speed control) Sensor voltage detection monitor: Time after engine start: 30 seconds or more A F sensor status: Activated Fuel system status: Closed-loop Sensor current detection monitor: Battery voltage: 11 V or more ECT: 75°C (167°F) or more Atmospheric pressure: 76 kPa (570 mmHg) or more Air-fuel ratio sensor status: Activated Continuous time of fuel cut: 4 to 10 seconds
Cause and Solution
Open or short in A F sensor (bank 1, 2 sensor 1) circuit A F sensor (bank 1, 2 sensor 1) A F sensor (bank 1, 2 sensor 1) heater A F sensor heater and relay circuits Air induction system Fuel pressure (low pressure side) Fuel pressure (high pressure side) Injector Fuel pressure sensor ECM
Video Guide
Diagnostic Info
- DTC Code: B1D7B
- Brand: Jeep