P0154 Error code picture attached

[crw4bama]

Getting error code P0154 deseperate for help have to pass emissions test to get rage I can reset the Codes but then when we take test it fails cause all of sensors reading N/A because hasn’t been through full drive cycle

[RickHaleParker]

284: ECM-290A (P0154) Front lambda probe, bank 2. Signal too low. Permanent fault

Diagnostic trouble code (DTC) information

D2500824 Condition
Probe monitoring begins after probe preheating diagnostics are complete. Diagnostic trouble code (DTC) ECM-290A is stored if there is a fault in the front heated oxygen sensor (HO2S) or its wiring causing the signal to deviate from its permitted range.
The control module registers four different types of fault:

1.Signal too high
The control module compares the front and rear adaptation values. A diagnostic trouble code (DTC) is stored when the values deviate by more than 3%. Note! The fault may be in the front or rear heated oxygen sensor (HO2S) circuit.

2.Signal too low
The control module monitors the aging of the probe by checking its dynamics when switching between lean and rich mixtures. The diagnostic trouble code (DTC) is stored if the control module registers that the probe is operating too slowly.

3. Signal missing
The control module monitors cross-induction from the probe preheating. Diagnostic trouble code (DTC) is stored when cross induction exceeds the permitted value.

4.Faulty signal
A diagnostic trouble code (DTC) stored when:
the control module registers that the signal from the front probe is above 4.8 V for too long
- the signal from the front probe does not deviate from λ= 1
the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture
the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.

Substitute value
The rear heated oxygen sensor (HO2S) control is disabled
Three-way catalytic converter (TWC) diagnostic is disabled

Possible source
1. Signal too high:

• air leakage in the exhaust system
  short-circuit to power supply or ground in the signal cable (+) or supply cable for pump current
  defective heated oxygen sensor (HO2S)

2. Signal too low:

• the cable for calibration current and the cable for pump current are short-circuited to each other
  open-circuit in signal cable (-)
  open-circuit in cable for calibration current
  defective heated oxygen sensor (HO2S).

3. Signal missing:

• Signal cable (+) and signal cable (-) short-circuited to each other
  one of the cables for heated oxygen sensor (HO2S) preheating is short-circuited to the probe's other wiring
  defective heated oxygen sensor (HO2S).

4. Faulty signal:

• short-circuit to supply voltage or ground in signal cable (+)
  short-circuit to supply voltage or ground in signal cable (-)
  short-circuit to supply voltage or ground in pump current cable
  short-circuit to supply voltage or ground in calibration current cable
  open-circuit in signal cable (+)
  defective heated oxygen sensor (HO2S).

Fault symptom
malfunction indicator lamp (MIL) lit.