P164A - O2 Sensor Positive Current Trim Circuit Performance (Bank 1 Sensor 1)
P164A - O2 SENSOR POSITIVE CURRENT TRIM CIRCUIT PERFORMANCE (BANK 1 SENSOR 1)
| Description: The nitrogen oxide (NOx) module monitors the NOx sensor O2 signal during an extended deceleration fuel shut off (DFSO) condition. This DTC sets when the actual O2 signal value does not match the expected O2 signal value. | |||
Possible Causes:
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RD . | ||