KH2 Nissan Skyline GT-R for sale in the USA. Right hand drive Japanese classic car |
I changed ECU's on the car, and while checking out the readings, one 02 sensor was reading normally. The 2nd sensor was reading maximum, or 2.55 volts. Unplugging the sensor, I saw 0 volts. So first thoughts are of course, the sensor is bad. However I also thought it could be the wiring. Since this car didn't have stock R32 sensors, it was always a chance. After looking it the wiring diagram, then pinning out what I saw, I thought that two pins were swapped.
RHS 02 sensor showing 2.55 volts. LHS 02 sensor showing 0.54 volts |
- Run factory R32 GT-R outlet pipes and factory 02 sensors
- Run factory R32 GT-R 02 sensors with an adapter to fit the 12 mm sensors in the 18mm holes
- With R33/R34 sensors, swap two pins on the square 4 wire connector on the 02 sensor or chassis wiring. This will at least get the signal and power wires to the right spots to/from the ECU.
Pin #1 and #2 swapped on the harness side of this R32 to match the R33 sensor wiring. |
They are also different sizes. The R32 GT-R sensor have a 12 mm thread, and use a 17 mm wrench to remove. The R33 GT-R sensor have a 18mm thread, and use a 22mm wrench.
- Alternative - these may require connector/pin swaps
- Bosch 13385 Square
- Denso 234-3126 Flat (long wire)
R32 (11/16th or17mm nut)
13.2 - 17 ft/lbs M12 sensors
R33 and R34 Nissan Skyline GT-R 02, Oxygen Sensors
R33 GTS-t Oxygen Sensors
- 22690-83T10 (R25det, R33, WC34,C34)
- Bosch 13420 (18mm, flat connector, short wire- 8 ")
- Denso 234-3096 (18mm, flat connector, short wire-10.5")
- NTK 24519 (18mm, flat connector, short wire- 10.5")
R33 (7/8th or 22 mm nut)
13.2 - 17 ft/lbs M12 sensors
R34 GT Turbo RB25det NEO
- 22690-AA007 OEM
- Denso 234-3006
- Bosch 18001
- Walker 250-23156
R33/R34 oxygen sensor wiring with pin out. The flat plug wiring is the same, the square plug wiring is not |
Notice the color of the middle pin. Gold/brass color. This is the signal wire. The same on R32/R33/R34 |
Notice the color on the upper right pin, which is pin #1. It needs to be moved to spot #2(lower right) for the reading to be correct. Then #2 pin to the upper right. |
Two pins swapped, both 02 sensors reading normally |
Depinning GT-R Oxygen Sensors
Remove the lock |
You can try the feel of the release on the empty pin. You also want to push all the terminals/wires in from the backside. This frees up the retaining clip. IMPORTANT! |
You can try the feel of the release on the empty pin. You also want to push all the terminals/wires in from the backside. This frees up the retaining clip. IMPORTANT! |
Pull on the wire once the clip lock is released |
R32 Oxygen Sensor wiring
We have to move the pins around as many of the replacement oxygen sensors we use only have the flat 3 pin connector.
Square connector or forward 02 sensor with stock sensor wiring. Flat is rear. |
Square connector or forward 02 sensor with stock sensor wiring. Flat is rear. |
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Buy-R.com for Nissan Skyline GT-R and GT-R parts.
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