...changing the sensor & sync unit too! Sorry, camshaft. Went to town for an AZ test( & me a dentist appt.....lovely...lol) & there test came up w/p1131. I HAVE researched some & I guess its a cyl. 1 problem. Are the cyl. 1 sensor wires part of that " cluster F***" of wires above the CS sync??? I`d appreciate knowing where to look & any more info! Hey, I`m not mad this time, dentist gives me valium for SHOT visits....LOL!!!
Once again, Thanx ahead of time!!! GAS

 

P1131 is for the O2 sensor, not the cylinders. It is possible the wires were disturbed, but more than likely it is a failed sensor. Here is short description__

P1130 - Lack of HO2S-11 Switch, Fuel Trim at Limit The HEGO Sensor is monitored for switching. The test fails when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit. Electrical:
Short to VPWR in harness or HO2S
Water in harness connector
Open/Shorted HO2S circuit
Corrosion or poor mating terminals and wiring
Damaged HO2S
Damaged PCM
Fuel System:
Excessive fuel pressure
Leaking/contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system
Induction System:
Air leaks after the MAF
Vacuum Leaks
PCV system
Improperly seated engine oil dipstick
EGR System:
Leaking gasket
Stuck EGR valve
Leaking diaphragm or EVR
Base Engine:
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near the HO2S(s)
A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S.
P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130