P2096 is Post Catalyst Fuel Trim System To Lean Bank 1.
In most cases this code refers to a bad O2 sensor in the exhaust. Due to year etc, senor replacement. here is the technical info for the code. Indicating O2 sensor 1/2 meaning bank 1, sensor 2 plus shows other posssibles
If the PCM multiplies short term compensation by long term adaptive as well as a purge fuel multiplier and the result is below a certain value for 30 seconds over two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL.
1/2 O2 Sensor
(K141) O2 Sensor 1/2 signal circuit
(K299) O2 1/2 Heater control circuit
(K904) O2 Return downstream circuit
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See: Initial Inspection and Diagnostic Overview\Initial Inspection
1. ACTIVE DTC
- Check the vehicle repair history. If the 1/2 O2 Sensor has been replaced make sure that the O2 sensor was properly installed and meets OEM specification.
- Check for contaminants that may have damaged the O2 Sensor: contaminated fuel, unapproved silicone, oil and coolant.
Ignition on, engine not running.
With a scan tool, read DTCs.
Q: Is the DTC active at this time?
YES: Go To 2
NO: Refer to the INTERMITTENT CONDITION Diagnostic Procedure. See: Component Tests and General Diagnostics Perform the POWERTRAIN VERIFICATION TEST. See: Verification Tests\Powertrain Verification Test
2. EXHAUST LEAK
Turn the ignition off.
WARNING: TO AVOID PERSONAL INJURY FROM THE EXHAUST SYSTEM BEING HOT, ALLOW THE EXHAUST TO COOL DOWN TO A SAFE TEMPERATURE BEFORE PERFORMING A PHYSICAL INSPECTION. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
Visually and Physically inspect the exhaust system for holes, cracks, and blockage in the exhaust system.
Q: Is the exhaust system is good condition?
YES: Go To 3
NO: Repair or Replace as necessary. Perform the POWERTRAIN VERIFICATION TEST. See: Verification Tests\Powertrain Verification Test
3. ENGINE MECHANICAL
Check for any of the following conditions/mechanical problems.
AIR INDUCTION SYSTEM - must be free from leaks
ENGINE VACUUM - must be at least 13 inches in neutral
ENGINE VALVE TIMING - must be within specifications
ENGINE COMPRESSION - must be within specifications
ENGINE EXHAUST SYSTEM - must be free of any restrictions or leak
ENGINE PCV SYSTEM - must flow freely
TORQUE CONVERTER STALL SPEED - must be within specifications
POWER BRAKE BOOSTER - no internal vacuum leaks
FUEL - must be free of contamination
FUEL INJECTOR - plugged or restricted injector; control wire not connected to correct injector
Left side exhaust, 2nd O2 sensor back just after cat converter
- Raise and support vehicle.
- Disconnect wire connector from O2S sensor.
CAUTION: When disconnecting sensor electrical connector, do not pull directly on wire going into sensor.
- Remove O2S sensor with an oxygen sensor removal and installation tool.
- Clean threads in exhaust pipe using appropriate tap.
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to threads of a new oxygen sensor.
Install O2S sensor. Tighten to 30 N-m (22 ft. lbs.) torque .
Connect O2S sensor wire connector.
Lower vehicle.Hope this helps and just keep in mind that your feedback is important
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