- P0750 and P0755 are circuit codes (a wire, connector or power feed to solenoid A or B); P0751 and P0756 are performance codes: the transmission didn't make the shift the computer commanded.
- A and B aren't the same part on every brand: on Chrysler they're the LR and 2-4 solenoids, on Ford SSA and SSB, and on GM's 4L60E the 1-2 and 2-3.
- GM and Honda don't use P0750 or P0755: their electrical fault shows up as P0973 to P0977.
- With P0756 on a 4L60E, GM says the most likely cause is debris in the valve body and that replacing only the solenoid won't fix it.
- If P0750 and P0755 appear together, the likely cause is something they share: the power feed, connector or harness, not two solenoids.
Codes P0750 and P0755 report a fault in the circuit of shift solenoids A and B, and P0751 and P0756 mean the transmission didn't make the shift the computer commanded. They look alike, but they're diagnosed differently, and which solenoid is "A" or "B" depends on the brand. Here's what each code means, what causes them, how they're diagnosed and which TSS part fits your transmission.
What do P0750, P0751, P0755 and P0756 mean?
| Code | What it means |
|---|---|
| P0750 | Shift solenoid A circuit malfunction. Ford describes it as a circuit open or shorted to power, and Nissan as an improper voltage drop when the computer operates it. |
| P0751 | Shift solenoid A performance or "stuck off": the computer commanded a shift and measured the wrong ratio. Ford flags it as a non-electrical fault. |
| P0752 and P0753 | Solenoid A stuck on (P0752) or electrical fault (P0753). |
| P0755 | Shift solenoid B circuit malfunction. |
| P0756 | Shift solenoid B performance or "stuck off": the transmission didn't make the commanded shift. |
| P0757 and P0758 | Solenoid B stuck on (P0757) or electrical fault (P0758). |
| P0973 to P0977 | Shift solenoid A or B control circuit low or high: this is how GM and Honda report the electrical fault on their recent transmissions. |
The difference matters: a circuit code (P0750, P0755) comes from a wire, a connector or the power feed, not from the fluid; a performance code (P0751, P0756) points to the hydraulic or mechanical side. Honda says it about its circuit codes: they're caused by an electrical problem and can't come from a mechanical fault in the transmission.
What are solenoid A and B on each brand?
There's no universal "solenoid A": each maker gives the letter to a different part, and GM and Honda don't even use P0750 and P0755 on their recent transmissions.
| Brand and transmission | What A and B are, and which codes it uses |
|---|---|
| Chrysler, Dodge, Jeep and Ram (41TE and 42RLE, 45RFE) | P0750 is the LR (low/reverse) solenoid and P0755 the 2-4 (on RFE units, the 2C). |
| Ford (4R70W, 6R80, 4F27E, 6F35) | SSA and SSB; on the 6R80, SSA feeds the 1-2-3-4 clutch and SSB the 3-5-R. It uses P0750 to P0758. |
| GM (4L60E, 6T40, 6L80, Aveo) | On the 4L60E, A is the 1-2 solenoid and B the 2-3. It doesn't use P0750 or P0755: it sets P0751, P0756 or P0973 to P0977. |
| Nissan (Versa, March and Tsuru) | Solenoids A and B (P0750 and P0755), circuit codes only; mechanical faults show up as P0731 to P0734. |
| Honda (Civic, Accord and CR-V) | Solenoids A, B and C; since 2006 it uses P0751, P0756 and P0973 to P0977, not P0750. |
| 6-speed Hyundai and Kia (A6GF1) | A is the UD solenoid and B the 26, and they set P0753 and P0758. The 4-speeds do use P0750 and P0755. |
| Mazda (FN4A-EL and FS5A-EL) | The letters don't match Ford's: Ford's SSA is Mazda's SSD. |
| Volkswagen (01M, 09G) | Solenoids N88 and N89; on the 01M they set P0753 and P0758. |
What about P0760, P0765 and P0770? Solenoids C, D and E
They follow the same pattern: P0760 to P0764 are solenoid C, P0765 to P0769 solenoid D and P0770 to P0774 solenoid E. Only transmissions with more solenoids set them, and again the letter depends on the brand:
| Brand and transmission | What C, D and E are |
|---|---|
| Chrysler, Dodge and Jeep (41TE and 42RLE, 45RFE) | On the 41TE and 42RLE, C is the OD solenoid (P0760) and D the UD (P0765); on RFE units, P0765 is also the UD. |
| Ford (6R80, 6F35) | They use SSA through SSE, so they go up to P0774. On the 2009 Escape, Ford tied P0770 to P0774 to an open or short in the SSE circuit, with erratic shifts or harsh engagements (US bulletin). |
| 6-speed Hyundai and Kia (A6GF1) | C is the 35R solenoid (P0763), D the OD (P0768) and E the SS-A (P0773). |
| Volkswagen (01M) | Solenoid N90 sets P0763. |
| Mazda (FN4A-EL and FS5A-EL) | P0751 to P0773 for its solenoids A to E, with letters that differ from Ford's. |
The causes and diagnosis are the same as for A and B: for a circuit code, check the wiring, connector and power feed first; for a performance code, the fluid and valve body.
What causes P0750 and P0755?
Since they're circuit codes, the cause is usually electrical:
- A broken or shorted wire, or a loose, dirty or wet connector: in the US, Ford documented water in the solenoid body connector of the 2002 Explorer, and Chrysler moisture in the connector of the 2003 to 2005 Liberty, Wrangler and Dakota.
- The internal harness or lead frame: Ford allows replacing a single solenoid, the harness or the lead frame without replacing the whole solenoid body.
- The power feed: on Chrysler units every solenoid is powered from the same relay, and on the 1999 Windstar in the US, Ford tied P0750 and P0760 to blown fuses.
- And last, the solenoid itself.
On US heavy-duty Ram pickups, Stellantis found that many solenoid packs replaced for P0755 and P0765 had no fault: the likely cause was a loose or dirty connection at the transmission connector.
What causes P0751 and P0756?
Here the computer commanded the shift and the transmission didn't make it, so the problem is usually hydraulic or mechanical. GM says it for the 4L60E in a US bulletin: P0756 is a performance code that electrical faults don't set, the most likely cause is debris plugging a valve body orifice or a stuck 2-3 valve, and replacing only the solenoid won't fix it unless it's cracked, broken or leaking. Other documented cases, also in the US:
- 6L80 (Silverado, Tahoe): with P0751 and 4th-gear starts, GM found a valve body valve sticking in its bore.
- Water in the fluid: GM tied it to P0756 on the 6L80.
- Damaged clutches: Ford tied P0756 to a damaged direct clutch on the 2015 and 2016 Edge and Explorer, and P0751 to direct clutch failure on the 2008 to 2011 Focus.
- Software: GM fixed a P0756 on the 2007 6L80 by reprogramming the module.
What does it mean when P0750 and P0755 appear together?
That something they share is likely failing: the power feed, ground, connector, harness or computer, not two solenoids at once. Chrysler checks the power-feed codes before the solenoids, and Hyundai documented P0750, P0755, P0760 and P0765 together with the transmission stuck in 3rd, in the US.
Can I drive with P0750 or P0755?
Only as far as the shop: the computer puts the transmission in a limp mode that depends on the unit. On the 42RLE (Liberty, Wrangler), if the code sets above 35 km/h (22 mph) the transmission goes to neutral; 4-speed Chrysler units stay in 2nd; a 6R80 with P0750 only uses 5th and 6th; a 4L60E with a B circuit fault stays in 3rd at maximum pressure, and Nissan RE4F03 units in 3rd.
How is it diagnosed?
- A scan tool that reaches the transmission module: the exact code and freeze frame data (P0700 only says there's another code).
- The fluid level and condition.
- The solenoid actuation test with the scan tool.
- With P0750 or P0755: the wiring and connector from the computer, wiggling them while testing, water or corrosion, the internal harness, fuses, relay and power feed; then the solenoid coil against that transmission's value.
- With P0751 or P0756: the fluid and filter, the solenoid with a leak test, the valve body and, last, the clutches.
- After replacing solenoids or the valve body, the relearn the maker requires.
There's no universal resistance value: Ford gives 20 to 30 ohms for the 4R70W solenoids, and Nissan 20 to 30 for solenoid A and 5 to 20 for B on the Versa's RE4F03. And a click isn't enough: if the click test passes and the code returns, Honda says to check the shift valve. More in our solenoid guide.
How do you clear the code?
With a scan tool, after the repair and after writing down the code and freeze frame. If the fault is still there, the code returns: Kia says to clear it and drive two cycles through every gear to confirm. Don't disconnect the battery to clear it: on Chrysler units the transmission's learned values are lost.
TSS parts for P0750 and P0755
These are the TSS solenoids and parts for each transmission. TSS has no solenoids for the 6R80, 6F35, the Aveo's AW81-40LE, Toyota's U340E or Hyundai and Kia units:
| Transmission | TSS parts |
|---|---|
| 4L60E | A and B solenoid kit; for P0756 from the valve body, rebuilt valve body 2003 to 2008 or 2009 on |
| 41TE (Journey 2.4, Voyager) | solenoid pack |
| 45RFE, 545RFE and 68RFE | white-connector solenoid pack |
| 4F27E (Focus) | A and B solenoids; Mazda calls them D and E |
| 4R70W and 4R75W | solenoid pair for the hard harness, 1998 to 2008 |
| Toyota A245E (Corolla 2003 to 2008) | shift solenoid |
| Honda Civic and Fit 5-speed | shift solenoid A |
| 01M (Jetta A4) | solenoid kit |
| 09G (Jetta 2.5) | N88 and N89 solenoids |
KIT SOLENOIDE DE CAMBIOS A-B 4L60E
Cuerpo de Válvulas Reconstruido 4L60E 4L65E 2003-2008 para Unidades sin Sensor en Bomba
CAJA DE SOLENOIDES TSS CHRYSLER ULTIMO DISEÑO RETRO COMPATIBLE a 1989 A604
Caja de Solenoides 45RFE 5-45RFE 68RFE Conector Blanco TSS
Solenoide Cambios ( A-B 4F27E) ( D-E FNR5)
Solenoide Cambios Doble Para Harness Duro 1998/08 AODE 4R70W 4R75W
Solenoide Cambios Toyota A340E A240E A245E A247E
Solenoide Cambios A Cafe Para Cuerpo de Valvulas SPCA MPCA SMMA SP5A