Code 2196

Good afternoon.

I listed the possibilities for you to review. They all can cause this issue.

You will need a scan tool to monitor live data for this code.

Roy

P2196
Descriptor
Lack Of Ho2S-11 Switch, Sensor Indicates Rich
Probable Causes
Air Induction System Leak after the Mass Air Flow (MAF) Sensor
Camshaft Timing Incorrect
Cylinder Compression Incorrect
Diaphragm or EGR Vacuum Regulator (EVR) Leaking
Engine Oil Dipstick Incorrectly Seated
Exhaust Gas Recirculation (EGR) Valve Malfunction
Exhaust Leak Before or Near the Heated Oxygen Sensor (HO2S)
Fuel Injectors Leaking and or Contaminated
Fuel Pressure Excessive
Fuel Pressure Low or Insufficient Fuel
Fuel Pressure Regulator Leaking
Gasket Leaking
Harness or Heated Oxygen Sensor (HO2S) Short to Ignition Switched Power (VPWR)
Heated Oxygen Sensor (HO2S)
Heated Oxygen Sensor (HO2S) Circuit Open or Shorted
Oil Overfull
Poor Mating Terminals and Wiring or Corrosion
Positive Crankcase Ventilation (PCV) System
Powertrain Control Module (PCM) Damaged
Vacuum Leaks
Vapor Recovery System
Water in Harness Connector

Flow chart

HA40 DTC P1131, P1151, P1132, P1152, P2195, P2196, P2197 AND P2198: UPSTREAM HO2S(S) NOT SWITCHING. DTCs P1130 AND P1150: FUEL SYSTEM NOT SWITCHING AT THE FUEL TRIM (RICH OR LEAN)

HO2S DTCs Reference list
- HO2S-11 = DTCs P1131, P1132, P1130, P2195 and P2196
- HO2S-21 = DTCs P1151, P1152, P1150, P2197 and P2198
- Check intake air system for leaks, obstructions, damage and blockage.

- Verify integrity of the PCV system.

- Check for disconnected spark plug wires.

- Check for vacuum leaks.
Are any of the above concerns present?
Yes

- REPAIR as necessary.

No

- GO to DC25 See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > DC: Mass Air Flow (MAF) Sensor - Pinpoint Test
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