P0755 on Toyota
Shift Solenoid B Malfunction
P0755 on Toyota vehicles indicates shift solenoid b malfunction. Au7o has documented this code across 2 Toyota models — most commonly on Corolla, RAV4. This code means the transmission control module commanded shift solenoid 'B' but did not see the expected electrical response, indicating an electrical fault in that solenoid or its circuit. Shift solenoids are small electrically-operated valves inside the automatic transmission that route pressurized fluid to engage the correct gears at the right time. When the computer detects an open, short, or out-of-range signal on solenoid B's circuit, it flags this code. You may notice harsh or wrong-gear shifts, the transmission stuck in one gear, or 'limp' mode. Typical repair costs on Toyota range from $600 to $1,500, depending on the specific model and root cause.
Common Causes of P0755
- •Failed or stuck shift solenoid B
- •Damaged, shorted, or corroded solenoid wiring/connector
- •Low or dirty/contaminated transmission fluid
- •Clogged transmission filter or fluid passages
- •Valve body wear or internal hydraulic fault
- •Faulty transmission control module (TCM)
- •Internal transmission mechanical wear
P0755 on Toyota by Model
Toyota Corolla(1 issue)
- ECM/PCM Failure Causing Harsh Shifting, No-Start, and MIL Illumination2000-2004
Early-2000s Corolla models are well documented for engine control module failure caused by defective internal circuitry and capacitor/board degradation. Owners report harsh or erratic automatic transmission shifting, stalling, no-start conditions, and check-engine lights because the ECM also controls transmission logic on these cars. Toyota issued a warranty enhancement and service campaign for many affected vehicles, making this one of the best-documented Corolla problems of the period.
Toyota RAV4(1 issue)
- ECM Failure Causing Harsh Shifting, No-Start, or Stalling2001-2003
Early third-party and owner reports, along with Toyota service information, document engine control module failures on 2001-2003 RAV4 models. Failed ECMs can corrupt transmission and engine control signals, leading to harsh or erratic shifting, illuminated warning lights, intermittent no-start, stalling, and poor drivability. This issue is distinct from normal transmission hesitation because the root cause is the ECM hardware itself.
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View P0755 across all makes →Frequently Asked Questions
What does P0755 mean on Toyota?▼
P0755 stands for "Shift Solenoid B Malfunction." This code means the transmission control module commanded shift solenoid 'B' but did not see the expected electrical response, indicating an electrical fault in that solenoid or its circuit. Shift solenoids are small electrically-operated valves inside the automatic transmission that route pressurized fluid to engage the correct gears at the right time. When the computer detects an open, short, or out-of-range signal on solenoid B's circuit, it flags this code. You may notice harsh or wrong-gear shifts, the transmission stuck in one gear, or 'limp' mode. On Toyota specifically, this code is documented across 2 models.
What causes P0755 on Toyota vehicles?▼
Common causes on Toyota: Failed or stuck shift solenoid B, Damaged, shorted, or corroded solenoid wiring/connector, Low or dirty/contaminated transmission fluid, Clogged transmission filter or fluid passages, Valve body wear or internal hydraulic fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0755 on a Toyota?▼
Repair costs on Toyota range from $600 to $1,500, depending on the specific model and root cause.
Which Toyota models have P0755 documented?▼
Au7o has documented P0755 on 2 Toyota models: Corolla, RAV4.