P0758 on Toyota: How to Diagnose & Fix
Shift Solenoid "B" Electrical
2 Toyota models · 3 documented issues · 1 critical · $150-$2,800 repair
P0758 on Toyota by model: symptoms, diagnosis and fix
The A245E 4-speed automatic used behind these engines develops shift-quality problems as it ages: harsh or delayed 1-2 and 2-3 shifts, flaring/slipping, missed shifts, and loss of reverse or overdrive engagement. Common culprits are worn or sticking valve-body components, degraded shift solenoids, low or burnt fluid, and worn internal seals/clutch packs. A throttle-position-sensor that is out of adjustment or a bad vehicle-speed sensor can also skew the shift schedule. The unit is otherwise durable, and many failures trace back to never-serviced, oxidized fluid.
Common Symptoms
- Harsh or delayed upshifts
- Slipping or RPM flare between gears
- No reverse or no overdrive engagement
- Missed or erratic shifts
- Burnt-smelling or dark transmission fluid
How to Fix
Start with a fluid level and condition check, TPS adjustment, and a fresh drain-and-fill with Toyota Type T-IV/Dexron-compatible ATF plus a new filter; this alone resolves many mild cases. Persistent harsh or missed shifts point to shift solenoids or a valve body that needs cleaning/rebuild; complete loss of reverse or overdrive with worn clutch packs typically requires a transmission rebuild.
Sources for this issue (3)
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.
Common Symptoms
- harsh 1-2 or 2-3 shifts
- delayed shifting
- check engine light
- no-start
- engine stalling
- transmission stuck in gear
- poor drivability
How to Fix
Diagnosis typically starts by confirming erratic shift behavior, communication issues, or stored transmission/engine codes, then verifying ECM part number applicability. The permanent fix is replacement of the ECM/PCM with the updated unit, followed by code clearing and confirmation of normal shift operation. Technicians should also inspect battery voltage and grounds so a weak electrical system is not mistaken for module failure.
Owner tips & cautions
- TipVerify the ECM part number and campaign applicability before buying a used module; many owners solved repeated shift issues only after installing the updated superseded ECM.
- TipCheck battery voltage, charging output, and grounds first, because low system voltage can mimic module and shift-solenoid faults.
Sources for this issue (1)
Toyota T-SB-0156-10 Rev2 applies to some 2001-2003 RAV4 vehicles with the U241E 2WD or U140F 4WD four-speed automatic transaxle that exhibit harsh shifting and/or an illuminated malfunction indicator lamp with DTC P0750, P0753, P0755, P0758 and/or P1760. Toyota states that ECM manufacturing was improved to reduce this condition. The bulletin does not describe intermittent no-start, engine stalling, poor throttle response or a general starting-system failure.
Common Symptoms
- Harsh automatic-transaxle shifting
- Malfunction indicator lamp with one or more supported shift-control DTCs
How to Fix
Confirm the automatic-transaxle configuration, current harsh-shift/MIL condition and supported DTCs. If the bulletin gates are met, T-SB-0156-10 Rev2 directs ECM replacement, ECM learning through at least 20 minutes of normal city driving and a transaxle function test. If harsh shifting and/or the specified P0750, P0755 or P1760 condition remains after the ECM procedure, the bulletin then permits transaxle replacement and memory reset. Do not condemn the transmission before completing the ECM-first procedure. The original 96-month/80,000-mile emissions coverage and the later 10-year/150,000-mile support program are expired; obtain a diagnosis and written estimate before repair.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Circuit Board Medics 2001-2003 Toyota RAV4 ECM/ECU repair service
repair the bulletin-matching original ECM before learning and transaxle function testing Fitment/availability: Repair-and-return service for listed 2001-2003 RAV4 2.0L ECM numbers and P0750/P0753/P0755/P0758/P1760 or harsh-shift symptoms…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- WarningDo not authorize a transmission replacement solely from harsh shifting; the Toyota bulletin requires the ECM procedure, learning drive and function test first.
- TipAsk the technician to document the transaxle model, every stored DTC and the post-ECM learning/function-test result.
Sources for this issue (1)
P0758 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0758 mean on a Toyota?
P0758 stands for "Shift Solenoid "B" Electrical." This powertrain code indicates an electrical fault in the transmission's shift solenoid 'B' circuit. Shift solenoids are electrically controlled valves that route transmission fluid to engage the correct gears (solenoid B is commonly associated with the 2-3 shift). The transmission computer detected the solenoid circuit electrical value (voltage/current) outside the expected range. This can cause harsh or missed shifts, slipping, or the transmission entering limp mode, and should be addressed to avoid further transmission damage. On Toyota it is documented across 2 models: Corolla, RAV4.
What are the most common causes of P0758?
The most common causes of P0758 are: Faulty shift solenoid B, Damaged, shorted, or open solenoid wiring/connector, Low or contaminated transmission fluid, Clogged or worn valve body passages, Internal transmission electrical (harness) fault, Faulty transmission control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P0758 on a Toyota?
Published repair estimates on Toyota range from $150 to $2,800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0758 on a different make?
View P0758 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.