LTFT = 0, o2 voltage very low, dead o2 sensor?

[wont_luz]

Ever since I installed ECU+ I have been having problems with the LTFT constantly reading zero, but the STFT is almost always +17%. The o2 sensor used to work and cycle just fine, but now it seems like it's dead. The o2 sensor rarely moves past .04v~.08V except for WOT where it reads from .84V~.96V. Could it just be a bad o2 sensor? It's a bosch universal 4 wire about a year old/15k miles on it. Any thoughts?

Time LTFT RPM Timing o2 o2 Trim
0.71 0 2080 29 0.04 4.69
1.40 0 2072 29 0.04 7.81
2.10 0 2072 29 0.04 10.16
2.83 0 2024 19 0.00 0.00
3.54 0 1952 29 0.02 2.34
4.25 0 1880 28 0.04 4.69
4.97 0 1888 27 0.04 7.03
5.66 0 1908 28 0.04 9.38
6.37 0 1904 28 0.06 12.50
7.07 0 1960 28 0.06 15.63
7.78 0 2016 32 0.02 17.19
8.48 0 1984 19 0.00 0.00
9.20 0 1876 27 0.02 2.34
9.92 0 1860 27 0.04 4.69
10.61 0 1904 28 0.04 7.03
11.32 0 1924 28 0.04 9.38
12.02 0 1932 32 0.04 11.72
12.73 0 1848 16 0.00 0.00
13.44 0 1816 16 0.00 0.00
14.15 0 1736 26 0.02 1.56
14.85 0 1696 23 0.02 3.13
15.57 0 1316 15 0.02 0.78
16.27 0 876 14 0.02 1.56
16.97 0 736 14 0.02 1.56
17.67 0 644 7 0.02 2.34
18.37 0 652 3 0.02 3.13
19.07 0 664 14 0.02 3.13
19.79 0 668 13 0.02 3.91
20.49 0 744 13 0.02 4.69
21.19 0 676 13 0.02 5.47
21.91 0 700 11 0.02 6.25
22.60 0 696 11 0.02 7.03
23.30 0 700 7 0.02 7.81
24.01 0 696 9 0.02 8.59
24.72 0 712 8 0.04 8.59
25.42 0 696 8 0.04 9.38
26.13 0 728 4 0.04 10.16
26.84 0 644 5 0.02 10.94
27.54 0 1444 17 0.04 13.28
28.25 0 1216 9 0.04 14.06
28.96 0 1144 19 0.02 14.84
29.66 0 800 14 0.02 15.63
30.39 0 748 10 0.04 16.41
31.09 0 704 8 0.04 17.19
31.79 0 692 9 0.04 17.19
32.50 0 760 5 0.06 17.19
33.21 0 1324 17 0.04 17.19
33.92 0 1400 24 0.06 17.19
34.64 0 1600 26 0.08 17.19
35.36 0 2432 29 0.06 17.19
36.07 0 3196 31 0.04 17.19
36.79 0 3452 34 0.74 0.00
37.50 0 2028 27 0.02 2.34
38.20 0 2236 27 0.02 6.25
38.91 0 2556 28 0.02 10.16
39.62 0 2948 29 0.04 14.84
40.34 0 3256 29 0.08 17.19
41.06 0 3208 23 0.02 0.00
41.76 0 2240 28 0.02 3.91
42.46 0 2320 27 0.02 7.03
43.17 0 2416 28 0.02 10.94
43.88 0 2560 28 0.06 15.63
44.59 0 2708 29 0.04 17.19
45.30 0 2788 29 0.04 17.19
46.00 0 2864 29 0.04 17.19
46.71 0 2928 34 0.08 17.19
47.41 0 2912 34 0.06 17.19
48.12 0 2800 23 0.22 0.00
48.83 0 2748 23 0.00 0.00
49.53 0 2592 23 0.00 0.00
50.24 0 2440 22 0.00 0.00
50.94 0 2308 21 0.00 0.00
51.66 0 2300 29 0.02 2.34
52.37 0 2212 29 0.04 3.91
53.08 0 2280 32 0.02 6.25
53.80 0 2192 21 0.00 0.00
54.50 0 2096 20 0.00 0.00
55.21 0 1940 19 0.00 0.00
55.92 0 1820 16 0.00 0.00
56.62 0 1660 14 0.00 0.00
57.32 0 872 14 0.00 0.78
58.04 0 720 9 0.02 1.56
58.74 0 660 14 0.02 1.56
59.43 0 676 9 0.02 2.34
60.16 0 1404 10 0.02 3.13
60.86 0 692 14 0.02 3.91
61.55 0 676 11 0.02 3.91
62.27 0 924 19 0.04 5.47
62.98 0 1300 22 0.02 7.81
63.69 0 2220 29 0.04 10.94
64.40 0 2876 34 0.04 0.00
65.12 0 1668 26 0.02 1.56
65.83 0 1844 24 0.04 4.69
66.54 0 2124 29 0.04 7.81
67.24 0 2336 29 0.04 10.94
67.94 0 2524 30 0.04 14.84
68.65 0 2652 29 0.04 17.19
69.35 0 3000 28 0.04 17.19
70.07 0 3360 33 0.52 16.41
70.79 0 2652 22 0.00 0.78
71.50 0 2216 32 0.04 3.91
72.20 0 2224 30 0.04 7.03
72.92 0 2300 28 0.04 10.16
73.63 0 2392 28 0.06 14.06
74.33 0 2524 34 0.06 17.19
75.05 0 2508 34 0.04 17.19
75.76 0 2492 33 0.06 17.19
76.46 0 2456 33 0.04 17.19
77.18 0 2468 30 0.06 17.19
77.88 0 2528 30 0.06 17.19
78.58 0 2588 32 0.06 17.19
79.30 0 2624 34 0.08 17.19
80.02 0 2620 34 0.78 15.63
80.73 0 2568 23 0.00 0.00
81.44 0 2448 22 0.00 0.00
82.14 0 2344 22 0.00 0.00
82.84 0 2240 21 0.00 0.00
83.54 0 2148 21 0.00 0.00
84.24 0 2044 19 0.00 0.00
84.96 0 1944 29 0.02 1.56
85.68 0 1904 28 0.04 3.13
86.38 0 1996 29 0.04 5.47
87.08 0 2056 29 0.04 8.59
87.79 0 2144 29 0.06 11.72
88.50 0 2176 30 0.04 14.84
89.20 0 2176 30 0.04 17.19
89.93 0 2116 20 0.00 0.78
90.64 0 2028 29 0.02 3.91
91.35 0 2004 19 0.00 0.00
92.06 0 1924 17 0.00 0.00
92.76 0 1780 16 0.00 0.00
93.45 0 1196 16 0.00 0.78
94.16 0 740 14 0.00 0.78
94.88 0 704 14 0.02 1.56
95.58 0 716 9 0.02 2.34
96.29 0 676 11 0.02 3.13
96.99 0 704 13 0.02 3.13
97.69 0 660 8 0.02 3.91
98.40 0 664 13 0.02 4.69
99.10 0 604 5 0.02 5.47
99.80 0 2292 29 0.02 0.00
100.53 0 1160 16 0.00 0.78
101.24 0 712 11 0.02 0.78
101.94 0 640 13 0.02 1.56
102.65 0 680 11 0.02 2.34
103.34 0 676 14 0.02 3.13
104.04 0 700 10 0.02 3.13
104.76 0 680 11 0.02 3.91
105.46 0 680 9 0.02 4.69
106.16 0 712 4 0.02 5.47
106.87 0 688 4 0.02 6.25
107.56 0 728 8 0.02 7.03
108.26 0 744 7 0.02 7.81
108.97 0 724 5 0.02 8.59
109.67 0 744 8 0.02 8.59
110.37 0 728 5 0.02 9.38
111.08 0 756 4 0.02 10.16
111.79 0 800 7 0.02 10.94
112.48 0 804 4 0.02 11.72
113.20 0 792 15 0.02 12.50
113.91 0 2464 32 0.00 0.00
114.61 0 1296 19 0.00 0.78
115.33 0 724 14 0.00 1.56
116.04 0 636 14 0.02 1.56
116.74 0 656 9 0.02 2.34
117.45 0 668 14 0.02 3.13
118.15 0 732 15 0.02 3.91
118.85 0 712 15 0.02 3.91
119.55 0 676 7 0.02 4.69
120.25 0 692 3 0.02 5.47
120.95 0 692 3 0.02 6.25
121.65 0 696 4 0.02 7.03
122.35 0 696 13 0.02 7.81
123.05 0 776 7 0.02 8.59
123.76 0 740 3 0.02 9.38
124.45 0 748 3 0.02 10.16
125.16 0 712 3 0.02 10.16
125.87 0 740 4 0.02 10.94
126.57 0 772 4 0.02 11.72
127.27 0 772 7 0.02 12.50
127.98 0 792 3 0.02 13.28
128.68 0 800 5 0.02 14.06
129.38 0 820 5 0.04 15.63
130.10 0 824 9 0.04 16.41
130.81 0 840 8 0.04 17.19
131.50 0 832 7 0.04 17.19
132.21 0 860 8 0.04 17.19
132.92 0 820 8 0.04 17.19
133.61 0 812 8 0.04 17.19
134.32 0 800 7 0.04 17.19
135.02 0 808 4 0.04 17.19
135.72 0 764 5 0.04 17.19
136.43 0 768 3 0.04 17.19
137.12 0 768 7 0.04 17.19
137.82 0 744 3 0.04 17.19
138.53 0 756 3 0.04 17.19
139.22 0 756 4 0.04 17.19
139.94 0 768 7 0.04 17.19
140.64 0 792 4 0.04 17.19
141.34 0 780 4 0.04 17.19
142.05 0 756 4 0.04 17.19
142.75 0 760 4 0.04 17.19
143.44 0 788 5 0.04 17.19
144.14 0 760 7 0.04 17.19
144.85 0 756 4 0.04 17.19
145.56 0 772 5 0.04 17.19
146.26 0 744 7 0.04 17.19
146.97 0 756 5 0.04 17.19
147.67 0 764 5 0.04 17.19
148.37 0 760 5 0.04 17.19
149.08 0 764 8 0.04 17.19
149.78 0 756 7 0.04 17.19
150.49 0 776 9 0.04 17.19
151.19 0 764 4 0.04 17.19
151.89 0 764 7 0.04 17.19
152.59 0 784 5 0.04 17.19
153.30 0 784 4 0.04 17.19
154.00 0 792 7 0.04 17.19
154.70 0 776 7 0.04 17.19
155.41 0 788 4 0.04 17.19
156.11 0 784 5 0.04 17.19
156.81 0 776 4 0.04 17.19
157.51 0 768 5 0.04 17.19
158.21 0 772 7 0.04 17.19
158.91 0 760 5 0.04 17.19
159.62 0 784 9 0.04 17.19
160.32 0 904 15 0.04 17.19
161.03 0 1432 22 0.04 17.19
161.75 0 1480 23 0.08 17.19
162.46 0 2472 29 0.04 17.19
163.17 0 2768 23 0.02 0.00
163.88 0 1708 24 0.02 2.34
164.58 0 1916 24 0.02 4.69
165.29 0 2256 27 0.02 8.59
166.01 0 2584 29 0.04 12.50
166.71 0 2920 34 0.04 -4.69
167.42 0 2224 28 0.00 0.78
168.14 0 1932 27 0.02 3.91
168.84 0 1988 28 0.02 7.03
169.54 0 2072 30 0.00 10.16
170.26 0 1976 17 0.00 0.00
170.97 0 1852 29 0.02 2.34
171.67 0 1940 28 0.02 5.47
172.38 0 1920 28 0.04 7.81
173.08 0 1932 29 0.04 10.16
173.78 0 1964 29 0.04 12.50
174.49 0 1984 29 0.06 15.63
175.21 0 2016 29 0.08 17.19
175.91 0 2032 29 0.08 17.19
176.61 0 2052 29 0.08 17.19
177.31 0 2076 29 0.08 17.19
178.01 0 2104 29 0.08 17.19
178.72 0 2120 30 0.08 17.19
179.41 0 2152 30 0.08 17.19
180.12 0 2176 30 0.08 17.19
180.83 0 2200 30 0.06 17.19
181.53 0 2200 30 0.04 17.19
182.23 0 2204 30 0.04 17.19
182.93 0 2204 30 0.04 17.19
183.63 0 2208 30 0.02 -4.69
184.34 0 2144 21 0.00 0.00
185.06 0 2104 20 0.00 0.00
185.76 0 2024 19 0.00 0.00
186.46 0 1952 19 0.00 0.00
187.17 0 1876 16 0.00 0.00
187.87 0 1812 16 0.00 0.00
188.57 0 1724 15 0.00 0.00
189.28 0 1644 14 0.00 0.00
189.99 0 916 15 0.00 0.78
190.70 0 872 13 0.02 1.56
191.42 0 664 10 0.00 2.34
192.12 0 664 13 0.00 2.34
192.82 0 672 14 0.00 3.13
193.52 0 652 9 0.00 3.91
194.24 0 664 15 0.02 4.69
194.95 0 676 9 0.02 5.47
195.65 0 692 4 0.02 5.47
196.35 0 684 9 0.02 6.25
197.05 0 724 14 0.02 7.03
197.76 0 704 7 0.02 7.81
198.46 0 708 9 0.02 8.59
199.16 0 728 8 0.02 9.38
199.88 0 732 7 0.02 10.16
200.58 0 772 5 0.02 10.94
201.28 0 776 3 0.02 11.72
201.99 0 820 9 0.02 12.50
202.69 0 832 7 0.02 13.28
203.38 0 836 5 0.02 14.06
204.09 0 852 7 0.02 14.84
204.79 0 880 5 0.02 15.63
205.51 0 860 9 0.04 16.41
206.22 0 852 8 0.04 17.19
206.92 0 824 5 0.04 17.19
207.61 0 804 9 0.04 17.19
208.31 0 788 9 0.04 17.19
209.01 0 764 3 0.04 17.19
209.71 0 756 4 0.04 17.19
210.42 0 796 8 0.04 17.19
211.13 0 736 11 0.04 17.19
211.83 0 1152 20 0.04 17.19
212.54 0 1304 21 0.04 17.19
213.24 0 1860 28 0.04 17.19
213.95 0 2688 34 0.02 -4.69
214.66 0 1736 24 0.02 1.56
215.37 0 1844 23 0.02 4.69
216.07 0 2228 27 0.02 7.81
216.78 0 2356 32 0.02 0.00
217.48 0 1884 24 0.02 2.34
218.18 0 1888 23 0.02 5.47
218.89 0 2132 26 0.02 8.59
219.58 0 2268 30 0.02 0.00
220.30 0 1784 26 0.04 2.34
221.02 0 1816 24 0.00 4.69
221.72 0 1800 16 0.00 0.00
222.42 0 1748 27 0.02 2.34
223.14 0 1768 33 0.00 4.69
223.84 0 1792 27 0.00 0.78
224.54 0 1804 27 0.02 3.13
225.24 0 1796 27 0.02 5.47
225.94 0 1828 27 0.02 7.81
226.65 0 1844 26 0.04 10.16
227.37 0 1884 27 0.06 13.28
228.08 0 1920 28 0.04 15.63
228.79 0 1936 29 0.06 17.19
229.49 0 1956 29 0.04 17.19
230.21 0 1976 29 0.06 17.19
230.91 0 1952 29 0.06 17.19
231.61 0 1952 29 0.08 17.19
232.32 0 1952 29 0.06 17.19
233.03 0 1944 29 0.04 17.19
233.74 0 1932 28 0.04 17.19
234.43 0 1932 28 0.04 17.19
235.15 0 1920 19 0.00 0.00
235.86 0 1844 16 0.00 0.00
236.55 0 1800 16 0.00 0.00
237.25 0 1748 16 0.00 0.00
237.97 0 1680 15 0.00 0.00
238.66 0 1636 14 0.00 0.00
239.36 0 936 16 0.00 0.78
240.08 0 852 9 0.00 1.56
240.78 0 752 10 0.00 2.34
241.47 0 696 14 0.00 2.34
242.19 0 720 10 0.00 3.13
242.88 0 704 9 0.00 3.91
243.58 0 712 7 0.00 4.69
244.28 0 720 7 0.00 5.47
244.99 0 732 5 0.00 6.25
245.69 0 736 7 0.02 6.25
246.39 0 716 7 0.02 7.03
247.09 0 740 9 0.02 7.81
247.78 0 764 8 0.02 8.59
248.50 0 776 15 0.00 9.38
249.21 0 1776 27 0.02 11.72
249.93 0 1744 27 0.04 14.06
250.65 0 2404 32 0.62 17.19
251.36 0 2264 17 0.00 0.78
252.07 0 1708 21 0.02 3.13
252.78 0 1812 23 0.02 5.47
253.48 0 2144 30 0.02 8.59
254.17 0 2168 30 0.02 11.72
254.90 0 2212 30 0.04 14.06
255.59 0 2220 30 0.04 17.19
256.29 0 2216 30 0.04 17.19
256.99 0 2196 30 0.04 17.19
257.68 0 2184 30 0.04 17.19
258.39 0 2300 30 0.06 17.19
259.10 0 2412 30 0.04 17.19
259.80 0 2596 30 0.04 17.19
260.52 0 2784 32 0.06 17.19
261.24 0 2976 34 0.02 -4.69
261.95 0 2300 29 0.00 1.56
262.65 0 2000 26 0.00 4.69
263.36 0 2116 26 0.02 7.81
264.06 0 2248 27 0.02 11.72
264.76 0 2412 28 0.02 15.63
265.49 0 2560 32 0.52 17.19
266.20 0 2584 34 0.32 -4.69
266.91 0 1744 24 0.00 1.56
267.63 0 1864 28 0.02 3.91
268.33 0 1904 28 0.02 6.25
269.03 0 1920 28 0.02 8.59
269.73 0 1932 28 0.02 10.94
270.43 0 1940 29 0.02 13.28
271.14 0 1956 29 0.04 15.63
271.85 0 1956 29 0.06 17.19
272.55 0 1960 30 0.02 17.19
273.26 0 1956 17 0.00 0.00
273.97 0 1888 17 0.00 0.00
274.67 0 1840 16 0.00 0.00
275.38 0 1800 16 0.00 0.00
276.09 0 1776 26 0.00 1.56
276.79 0 1772 26 0.00 3.13
277.48 0 1600 7 0.00 0.00
278.20 0 904 11 0.00 0.78
278.90 0 804 9 0.00 1.56
279.59 0 684 7 0.00 2.34
280.31 0 728 13 0.00 3.13
281.00 0 744 5 0.00 3.91
281.71 0 692 10 0.00 3.91
282.41 0 748 7 0.00 4.69
283.11 0 756 8 0.00 5.47
283.81 0 744 8 0.00 6.25
284.52 0 776 7 0.00 7.03

 

[NOMIEZVR4]

The best advice i can give is for you to go onto dsmlink.com/forums and they have amazing tuners tthat resolve these issues all the time. Im assuming this is with dsmlink

 

[wont_luz]

No this is with the ECU+, I'm just using pocketlogger to log the fuel trims and o2 values.

 

[PieEyedPiper]

Have you tested going back to stock ECU setup to see if the problem goes away?
Also, are you using the harness or did you make your own?

 

[wont_luz]

Have you tested going back to stock ECU setup to see if the problem goes away?
Also, are you using the harness or did you make your own?

No I haven't tried the stock setup because I soldered the ecu+ harness directly into the factory harness. The LTFT was working before with just a pocket logger and a maft though, which is why it makes me question. I'm going to double check the wires tomorrow and do a boost leak test just to rule those out as possible causes.