P1132 Insufficient switching Bank 1 Upper Sensor/Rich

Have you tested the ECT sensor yet?

You should also test the Bank 1 (firewall side) Upper O2 Sensor.
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/ca/83/0900823d801bca83.jsp

Originally posted by Ray:
If you are getting a rich code set on only one bank, you need to look for something that can affect only one bank.

Things to look at:
......faulty O2 sensor on that bank .......



Bank 1 Upper O2 sensor how to.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=1023736&Forum=v6maint&Words=replace%20o2&Match=And&Searchpage=0&Limit=2500&Old=allposts&Main=1023736&Search=true#Post1023736


From TSB,

P1132 - Lack of HO2S-11 Switch, Indicates Rich. When an HO2S sensor indicates rich at the end of a test, the system is trying to correct for an over-rich condition. The code is set when the fuel control system no longer detects switching for a calibrated amount of time.

Electrical:
�· Short to VPWR or VREF in harness or HO2S
�· HO2S circuit shorted to Ground
�· Water in harness connector
�· Open circuit
�· Corrosion or poor mating terminals and wiring
�· Damaged HO2S
�· Damaged PCM (other DTCs should be present)

Fuel System:
�· Excessive fuel pressure (stuck fuel pressure regulator, restricted fuel return lines, etc.)
�· Leaking/contaminated fuel injectors or fuel pressure regulator
�· Low fuel pressure or running out of fuel (fuel pump concern, fuel supply line restrictions, low fuel level, etc.)
�· Vapor recovery system (stuck VMV, etc.)

Induction System:
�· MAF contamination
�· Air leaks between MAF and throttle plate
�· PCV system / Other vacuum leaks
�· Improperly seated engine oil dipstick

EGR System:
�· Leaking gasket
�· Stuck EGR valve / Leaking diaphragm or EVR

Base Engine:
�· Oil overfill
�· Incorrect cylinder compression
�· Exhaust leaks before or near the HO2S
�· Secondary air stuck on

Last edited by Tony2005; 07/29/06 02:36 AM.
"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles