RD26-1 202604 Over The Air

REMOTE DIAGNOSTICS REPAIR INSTRUCTIONS

DTC: P126E-7A / P126E-7B

Description:

Applies to:
Bulletin: RD 2 6 -1
Date: April 24 , 202 6
Transmission Oil Level Sensor

US24 and Newer
Para español, haga clic aquí

General Information
: ESPAÑOL
Emissions , Product Class ( B 1)

Pour le français, cliquez ici
: FRANÇAIS
.
NOTE: The result of receiving this repair instruction is because P126E-7A or P126E-7B fault codes are/were active.

NOTE: Before proceeding, please make sure that ALL electronic control modules are up to date and there are no pending updates available.

These repair instructions are intended to address the following fault(s):

DTC
Description
Possible Cause
P126E-7A
Transmission Oil Level –

Fluid leak or seal failure
P126E-7B
Transmission Oil Level

Sensor – Low Fluid level
•

•

•
Transmission, External leakage

Wiring harness, Damaged wires, or connector

Transmission Oil Level Sensor
•
See above…
Possible (Observable) Symptoms

•

•

•
Trans oil level Yellow warning message

Trans oil level Red warning message

Fluid leakage
•
See above…
Driver Display Warnings
Page 1 of 3

© 2026 Volvo Group North America, LLC. Information is subject to change without notice.
REMOTE DIAGNOSTICS REPAIR INSTRUCTIONS

DTC: P126E-7A / P126E-7B
Bulletin: RD 2 6 -1
Illustrations may differ slightly

from the actual vehicle being serviced.

However, key components addressed in this

information are represented as accurately as

possible.

Colors used in illustrations are

for highlighting purposes only and do not

correspond to the actual colors of the vehicle.
All threaded fasteners that do

not have a tightening torque specification in

the information are tightened to a standard

torque. Standard torques are available in

Impact.
CAUTION

Service Information Advisory.
Date: April 24 , 202 6
If you are not properly trained and certified in

this procedure, ask your supervisor for

training before you perform it.

▶ You must read and understand the

precautions and guidelines in Service

Information, Function Group 4, "General

Safety Practices, Transmission" before

performing this procedure.

▶ Do not start the engine if the transmission

oil level is low, severe transmission damage

may occur.
Page 2 of 3

© 2026 Volvo Group North America, LLC. Information is subject to change without notice.
REMOTE DIAGNOSTICS REPAIR INSTRUCTIONS

DTC: P126E-7A / P126E-7B
Bulletin: RD 2 6 -1
Park the vehicle on a level surface. Apply the parking brake. Place the gear

lever in neutral.

Install the wheel chocks.
Check for oil leakage on the transmission.

Check for coolant leakage.

Repair any leaks found.

Fill to recommended level with proper fluid.
Start the engine. Check for leakage.

Stop the engine. Verify repairs.

Remove the wheel chocks.
Page 3 of 3

© 2026 Volvo Group North America, LLC. Information is subject to change without notice.
Date: April 24 , 202 6

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Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

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