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6E–372 6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS Diagnostic Trouble Code (DTC) P1167 Fuel System Rich During Decel Fuel Cut Off (Bank1)
Step Action Value(s) Yes No 1 Was the “On-Board (OBD) System Check” performed? — Go to Step 2 Go to OBD System Check 2 Are any component related DTCs set? Go to component DTC charts Go to Step 3 3 1. Place the transmission in Park. engine 75 ° C – 95 ° C (167 ° F – 203 ° F) at 1200 RPM. 3. HO2S 1 voltages should vary within the specified range. (100 – 900mV) 4. Quickly open the wide open the throttle for a few seconds. Did the voltage suddenly rise toward the low end of the 100 – 600 mV Go to OBD System Check Go to Step 4 4 1. Disconnect the fuel pump relay and crank the engine to relieve the fuel pressure. 2. Install the fuel pressure gauge. temperature. 4. Disconnect the vacuum line going to the fuel pressure regulator. With the engine running, is the fuel pressure within the 280 – 325Kpa (41 – 46psi) Go to OBD System Check Go to Step 5 5 1. Ignition “OFF”. fused jumper which will connect the relay’s battery 3. While the fuel pump is operating, use pliers to slowly close the return line (do not exceed the first Is the fuel pressure gauge reading near the specified 325KPa (46psi) 414KPa (60psi) Check the Procedure Refer to Diagnostic Aids Go to Step 6 6 Check the following items; D Faulty fuel pump D Incorrect fuel pump D Incorrect fuel being used D Cold fuel If a problem is found, repair as necessary. Was a problem found? — Verify repair — |