Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p0172 system too rich bank 1

NOTE:

Refer to DTC P0175 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0175 SYSTEM TOO RICH BANK 2

1. OUTLINE OF DIAGNOSIS

Detect fuel system malfunction by the amount of main feedback control.

2. EXECUTION CONDITION

Secondary Parameters

Execution condition

A/F main feedback function

In operation

3. GENERAL DRIVING CYCLE

Perform the diagnosis continuously during the closed loop.

4. DIAGNOSTIC METHOD

Compare the diagnostic value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria listed below continues for 10 s - 3 time(s) or more, judge that there is a fault in the fuel system.

Judgment Value

Malfunction Criteria

Threshold Value

fsobd = (sglmd − tglmda) + faf + flaf

< Value from Map

In this case: sglmd = measured lambda

tglmda = target lambda

faf = main feedback compensation coefficient (every 64 milliseconds)

flaf = main feedback learning compensation coefficient

Map

Warm-up increase compensation coefficient

0.000

0.102

0.199

0.301

Threshold Value

0.67 − 0.000

0.67 − 0.105

0.67 − 0.177

0.67 − 0.241

Warm-up increase compensation coefficient

0.398

0.450

Threshold Value

0.67 − 0.295

0.67 − 0.319

Time Needed for Diagnosis: 10 s - 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Dtc p0196 engine oil temperature sensor "a" range/performance
DTC DETECTING CONDITION:Detected when two consecutive driving cycles with fault occur.TROUBLE SYMPTOM:• Hard to start• Improper idling• Poor driving performanceCAUTION:After servicin ...

Dtc p0171 system too lean bank 1
NOTE:Refer to DTC P0175 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0175 SYSTEM TOO RICH BANK 21. OUTLINE OF DIAGNOSISDetect fuel system malfunction by th ...

Other materials:

Removal
1. Disconnect the ground terminal from battery sensor. NOTE2. Lift up the vehicle.3. Remove the clips, and turn over the mud guard - front.4. Remove the fog light assembly - front.(1) Disconnect the connector.(2) Remove the screws and clips, and remove the fog light assembly - front.• Sedan m ...

© 2017-2024 Copyright www.sulegacy.com