Honda Civic Service Manual page 416

PGM-FI System
Itil-"w Heated Oxygen Sensor (primary HO2S) (sensor 1l
(Dl6Y5 engine with M/Tl
The scan tool indicates Diagnostic Trouble Code (DTC) p1162: A malfunction in the primary
Heated Oxygen
Sensor (Primary HO2S) (Sensor 1) circutt.
Doscription
The Primary Heated orygen sensor (Primary Ho2s) {sensor 1) operates over a wide airlfuel range.
The primary Ho2S
(Sensor 1) is installed in the exhaust manifold.
SEI{SOR
ELEMENT
SENSOR
TERMINALS
ECM CONNECTOR C (31PI
PRIMARY HO2S
(SENSOR 1)8P
CONNECTOR {Clir5)
female terminals
o f f e m a l e
t e r m i n a l s
NOTE: lf DTC Pl162 is stored at the same time as DTC Pl167, troubteshoot DTC p1162 first, then recheck
for DTC p1167.
( T o p a g e 1 1 - 1 4 7 )
-
lh6 MIL hes b6on reDorted on.
-
DTCPl162 ir 3tored.
Problom v6rificationi
1. Do the ECM Reset Procedure.
2. Start the engine.
3. Wait at least tlvo minutes.
Test drive tor several miles with
the transmission in 3rd gear. Hold
the engine speed at 1,500 rpm.
ls DTC P1162 indicatod?
Intermittent tailuro, systom is OK
at this timo. Check tor poor con-
nections or loose wires at C145
(Plimr.y HO2S, Senso. t) and
ECM,
ls DTC P1162 indicated?
Chock for an open in the wire
(lP+ lins):
1. Turn the ignition switch OFF.
2. Disconnect ECM connector C
{31P) from the ECM.
3. Disconnect the 8P connector
from the Primary HO2S {Sen-
s o r 1 ) .
4. Check for continuity between
the Primary HO2S (Sensor 1)
8P connector terminal No. 7
and ECM connector terminal
c23.
Repair open in the wire betwaon
ECM (C231 end Prim.ry HO2S
lsen3or l).
Inspect lor poor terminal to termi-
nal contact at the Primary HO2S
lsensor 'l I connoctor and ECM.
It terminal contect is OK, roplace
lh6 Primrry HO2S {Sensor 1}.
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