P1164

DTC P1164: A/F Sensor (Sensor 1) Circuit Range/Performance Problem

1. Reset the ECM.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in neutral) until the radiator fan comes on.
3. Test-drive in 3rd gear. Starting at 1,600 rpm, accelerate using wide open throttle for at least 5 seconds. Then decelerate for at least 5 seconds with the throttle completely closed until the A/F sensor readiness code is set to complete or Temporary DTC P1164 comes on.
4. Check for a Temporary DTC with the scan tool.

Is Temporary DTC P1164 indicated?

YES - Replace the A/F sensor (Sensor 1).

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the A/F sensor relay, at the A/F sensor (Sensor 1), and at the ECM.