By iCarsoft Official Store Technical Team, Automotive Diagnostics Editors · Updated September 5, 2026 · OEM technical references checked
Quick Answer
The P0867 code means transmission fluid pressure. It does not prove a pressure sensor is defective, fluid pressure is universally low or high, or the transmission assembly must be replaced. Save the scan, identify the exact architecture, and test the physical and electrical paths before selecting a repair.
What Does the P0867 Code Mean?
P0867 is standardized as Transmission Fluid Pressure. It names a monitored result, not a guaranteed failed part. The reporting module, suffix and companion faults determine the relevant test branch.
A transmission controller can compare commanded pressure, inferred torque capacity, ratio behavior and one or more measured pressure inputs. P0867 reports the fluid-pressure monitor category without the low or high suffix of P0868 or P0869. Electrical, fluid, hydraulic, software and internal mechanical branches therefore remain open.
Read each suffix as its exact monitor classification, not a universal physical direction. Confirm the designation, units, signal source and test state before comparing scan data with an external measurement.
Hyundai TSB 23-AT-010H includes P0867 in an IVT oil-pressure-sensor partial-repair and adaptive-relearn procedure for specifically listed vehicles. That sensor and repair path must not be generalized to another transmission or VIN.
Separate P0867 from adjacent fault families
| Code | General description | Key distinction |
|---|---|---|
| P0867 | Transmission fluid pressure | General monitored transmission-pressure result. |
| P0868 | Transmission fluid pressure low | Low pressure classification. |
| P0869 | Transmission fluid pressure high | High pressure classification. |
| P0845 | Transmission fluid pressure sensor/switch B circuit | A named sensor/switch circuit family, unlike P0867. |
Record the complete P0867 description. The suffix, reporting module and companion faults can change the diagnostic path. Current manufacturer evidence governs when the queue wording conflicts.
P0867 Symptoms and Likely Causes
P0867 symptoms depend on fault status and the fallback strategy. Record what the driver and modules reported. A symptom list is not a parts list.
Stop adding load and save commanded, actual and ratio information.
Record the first transmission fault and fluid temperature before cycling the key.
Verify level only at the exact manufacturer temperature and procedure.
An intermittent pressure event still needs fluid, connector and data review.
Practical cause-checking order
- Accessible connection: Low, overfilled, contaminated or incorrect fluid, an external leak or restricted filter or pickup.
- Circuit or shared path: Open, short, poor supply, ground, signal or connector condition in a monitored pressure path.
- Supporting system: Pump, suction, valve-body, solenoid or hydraulic leakage that prevents commanded pressure response.
- Named component: Pressure sensor or internal transmission component that fails its specified test.
- Controller or software: TCM calibration, adaptive setup or controller fault after electrical and hydraulic evidence passes.
Did P0867 appear after recent fluid service, cooler, pan, valve-body, sensor, transmission, battery, connector or harness work? Recheck disturbed connectors, grounds, hoses, fluids, part numbers and setup steps for the transmission fluid pressure control and hydraulic response. Record battery and software history; a post-repair code does not prove the new part is defective.
How Serious Is P0867, and Can You Drive?
Arrange diagnosis promptly. When the warning is steady, operation remains normal and the owner's manual permits it, a short light-load trip to a repair facility may be reasonable. Avoid demanding use until the transmission fluid pressure control and hydraulic response is understood. P0867 does not provide a universally safe distance.
Record temperature, load, speed, start state and recent service. Do not reproduce a severe symptom on public roads; another warning can make the situation more urgent.
Stop and arrange a tow if the transmission slips, bangs, loses drive or reverse, overheats, leaks fluid, emits smoke or a burning odor, enters severe failsafe, or pressure-test fittings and vehicle support are not secure.
Transmission fluid can be hot and pressure tests can release fluid. Secure the vehicle, keep clear of rotating wheels and driveline parts, use rated hoses and fittings, and never improvise a pressure port or level procedure.
How to Diagnose P0867 in the Right Order
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Save the complete fault record
Scan before clearing. Save P0867 wording, suffix, reporting module, status, freeze frame, companion codes, supply voltage and available data for the transmission fluid pressure control and hydraulic response. Record failure order, recent repairs and restart behavior for later comparison.
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Identify the VIN-specific monitor and architecture
Use the VIN, engine, transmission and equipment codes to obtain the current wiring diagram, connector views, monitor description and bulletins. A transmission controller can compare commanded pressure, inferred torque capacity, ratio behavior and one or more measured pressure inputs. P0867 reports the fluid-pressure monitor category without the low or high suffix of P0868 or P0869. Electrical, fluid, hydraulic, software and internal mechanical branches therefore remain open. Confirm software identifiers and service-action eligibility directly; a bulletin for one application does not establish coverage for another.
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Inspect the accessible physical path
Follow the safety procedure, then inspect connectors, locks, seals, terminals, clips and harness routing for the transmission fluid pressure control and hydraulic response. Look for heat, abrasion, fluid entry, corrosion, tension and unsuitable prior repairs. Check the supporting mechanical, air, exhaust, fluid or vacuum path named in the service information. Photograph evidence before correcting it.
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Prove circuits and physical conditions
Use the manufacturer-specified fluid-level equipment, pressure gauges with rated hoses, high-impedance meter and safe vehicle support as the exact procedure requires. Prove feeds, grounds and references under the specified load, then test signal or control integrity at the correct states. Isolate components before resistance tests. Never bridge a controller pin to battery or ground, and do not substitute a continuity beep for a load, pressure or waveform test.
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Compare supported command and response
Compare supported commanded and actual pressure, pressure-control current, ratio, input or output speed, slip and fluid temperature at the saved condition. A PID or active command does not prove actual hydraulic pressure without the prescribed external test. Compare scan evidence with the external measurement and companion faults. A command does not prove physical movement, pressure, current, temperature or torque. A missing PID or active test is a coverage limitation, not evidence that the vehicle component failed. Stop any test if operation becomes unsafe.
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Choose the supported repair and setup
Repair the failed path and correct the reason for damage. Confirm part application, required setup authorization and any relearn. Consider a controller only after its powers, grounds, inputs, outputs and service information pass.
Specifications are vehicle-specific. There is no universal voltage, resistance, current, pressure, waveform, timing, temperature, percentage, learned value or drive cycle for P0867. Test state, connector location and system design change what a valid value means. Use only specifications for the exact VIN and do not transfer the OEM example in this article to another application.
P0867 Repairs and Typical Costs
The correct P0867 repair follows the failed test. Wiring, a physical repair, a proven component, software and controller work are different outcomes. Do not replace an assembly from the generic code alone.
After installation, recheck connector seating, harness clearance, fluid or mechanical setup and every required learn. If an OEM bulletin appears relevant, document vehicle eligibility, installed calibration and prescribed action. The existence of the bulletin in the references does not promise warranty, free repair or a software cure for other vehicles.
| Possible path | Current US estimate |
|---|---|
| Correct proven fluid level, specification, leak, filter or pickup condition | VIN-specific quote |
| Restore a pressure-sensor, solenoid, connector, supply, ground or signal path | VIN-specific quote |
| Repair a proven pump, valve-body, hydraulic or internal transmission fault | VIN-specific quote |
| Apply an eligible TCM update and complete adaptation only when covered | VIN-specific quote |
There is no single national P0867 repair price because these rows are alternative outcomes. Ask for an itemized estimate showing diagnostic time, parts, labor, fluids, service-information access and verification. Location, taxes, related damage and warranty eligibility change the total. Do not add the rows together or authorize an assembly without the supporting failed test.
Using iCarsoft CR Pro S for P0867
On a supported vehicle, iCarsoft CR Pro S can retrieve accessible module faults, save available freeze frame, display ECU-provided live data and create a diagnostic report. For P0867, preserve the original evidence and compare related modules before clearing an erasable record.
Preserve the transmission fluid pressure control and hydraulic response evidence
iCarsoft CR Pro S
Review supported codes and relevant live data together. Confirm the exact VIN, controller access, PIDs and any requested active test with iCarsoft before purchase; generic product capabilities do not guarantee a P0867-specific function.
Check current CR Pro S price and availabilityCheck CR Pro S compatibility by VINThe official product page describes full-system diagnosis, available freeze frame/live data, reports and supported active tests; every function remains vehicle, ECU and software dependent. Supported topology and coding availability varies by vehicle and ECU and requires VIN confirmation. Follow OEM prerequisites and stop for abnormal operation.
Know the measurement boundary. The scanner reports information supplied by the vehicle. It does not directly prove terminal tension, circuit load capacity, leakage, pressure, temperature, mechanical travel or internal condition in the transmission fluid pressure control and hydraulic response. It also cannot replace the manufacturer-specified fluid-level equipment, pressure gauges with rated hoses, high-impedance meter and safe vehicle support when the OEM procedure requires them. Interpret commanded and reported values alongside measured evidence.
Verify the P0867 Repair
After repair, verify connectors, harness clearance, setup and controller supply. Save post-repair findings, then clear only erasable records through the approved procedure. Battery disconnection is not a repair.
Run the manufacturer's applicable verification conditions in a safe workshop or route. Compare the original operating state with current data for the transmission fluid pressure control and hydraulic response, and check current and pending faults in related modules. One clean start or idle period does not prove that every conditional monitor has completed.
If P0867 returns, compare its suffix, status, failure order and operating conditions with the saved baseline before replacing another part. Revisit the failed branch and inspect anything disturbed. Keep mechanical repair, monitor completion, readiness and local inspection eligibility as separate outcomes.
A permanent P0867 can remain immediately after a successful repair. If the vehicle stores it as a permanent DTC, a scan tool or battery disconnect cannot erase it. Once current and pending faults are absent, the OBD system removes the permanent record only after the applicable monitor reruns and passes.
Related Transmission Fluid Pressure Control And Hydraulic Response Code Guides
P0867 Frequently Asked Questions
Does P0867 mean the named component is bad?
No. P0867 describes transmission fluid pressure, not a confirmed part. It also does not prove a pressure sensor is defective, fluid pressure is universally low or high, or the transmission assembly must be replaced. Test accessible wiring, supplies, grounds and supporting physical conditions, then follow the exact monitor tree. Replace a component only when its branch fails or an applicable OEM action specifically supports it.
What should I check first for P0867?
Save every module's codes and freeze frame before clearing. Confirm the full definition, suffix and VIN architecture. Then inspect recent fluid service, cooler, pan, valve-body, sensor, transmission, battery, connector or harness work, connectors and shared supplies. Those facts determine whether the next test needs the manufacturer-specified fluid-level equipment, pressure gauges with rated hoses, high-impedance meter and safe vehicle support or a manufacturer-specific functional procedure.
Can I drive with the P0867 code?
Only consider a short light-load trip when operation is normal and the owner's manual permits it. Stop if the transmission slips, bangs, loses drive or reverse, overheats, leaks fluid, emits smoke or a burning odor, enters severe failsafe, or pressure-test fittings and vehicle support are not secure. The code number cannot establish a safe mileage allowance, and another warning can make the situation more urgent.
Why did P0867 return after a part was replaced?
The original circuit or supporting-system fault may remain, the part or setup may be wrong, or the first diagnosis may have confused a monitored result with a failed component. Compare the new failure conditions with the saved record and recheck every disturbed connection before buying another part.
How much does a P0867 repair cost?
A VIN-specific estimate is required because diagnosis may lead to wiring, a supporting physical repair, a verified component, software or a controller. Ask which failed test supports the quote and whether diagnosis, taxes, setup and post-repair verification are included.
Can CR Pro S diagnose and clear P0867?
On a supported vehicle, CR Pro S can organize available faults, freeze frame, live data and reports, and can clear erasable records after repair. Confirm exact ECU coverage. It cannot force-clear a permanent DTC or replace physical measurements for the transmission fluid pressure control and hydraulic response.
The iCarsoft Official Store Technical Team maintains the store's fault-code library. This guide organizes published manufacturer evidence and verified product information; it does not document a hands-on test of a particular vehicle or claim an individual engineer's review.
Technical and cost references
- Hyundai TSB 23-AT-010H — Oil Pressure Sensor Replacement and Relearn. Uses P0867 in a vehicle-specific IVT oil-pressure-sensor repair and adaptive-relearn procedure.
- Kia TSB TRA 102 Rev. 1 — IVT Software Logic Improvement and/or IVT Replacement. Lists P0867 Transmission Fluid Pressure within an application-specific software and IVT diagnostic path.
- California Bureau of Automotive Repair — On-Board Diagnostic Test Reference. Permanent DTCs are removed by the vehicle after applicable verification, not by a scan-tool erase command.
Product information: Official iCarsoft CR Pro S page.
Editorial note: General diagnostic education, not a substitute for the owner's manual, current VIN-specific service information or professional inspection. Test limits, procedures, coverage and costs vary. Related articles provide context; apply only the specifications and repair procedures that match the vehicle. No universal failure rate, repair price or outcome is implied.
