P2546-86 Fault Code – Vehicle fault code with verified manufacturer evidence

Car Codes diagnostic trouble code

P2546-86Diagnostic priority

…14MY ONWARDS FITTED WITH 9HP48 9-SPEED AUTOMATIC TRANSMISSION: RETAILERS REPORTING THESE VEHICLES ARE FLAGGING THE FOLLOWING (TCM) TRANSMISSION CONTROL MODULE DTCS P2545-86 AND/OR P2546-86 CODES DURING SDD DTC READ OR ON CUSTOMER CONCERN. SHOULD THERE BE OTHER TRANSMISSION RELATED FAULT CODES IN ADDITION THESE OTHER CODES SHOULD BE INVESTIGATED AND RESOLVED BEFORE PROCEEDING WITH THIS INSTRUCTION. ISSUE: TRANSMISSION CONTROL MODULE (TCMS) ARE…

Code interpretation

What P2546-86 means

This code indicates Vehicle fault code with verified manufacturer evidence Its precise meaning depends on the reporting control module, complete failure-type suffix, model year, powertrain and software level.

Driver experience

Symptoms you may notice

A stored diagnostic trouble code or a related system warning.

Test, do not guess

Possible causes

The precise cause depends on the reporting module, vehicle specification, circuit condition and software level.

Evidence-led checks

Recommended diagnostic route

Save the complete scan and confirm the code against model-specific technical information before testing.

Capture the evidenceSave the complete all-module scan, code suffixes and freeze-frame data.
Prove the basicsTest battery condition, system voltage, power and grounds.
Identify the reporterConfirm the module that logged the code and check circuit integrity.
Compare live dataReview commanded and actual values under the conditions that set the code.
Test before replacingUse model-specific wiring diagrams, pin tests and technical information.
Verify the repairClear the code only after recording evidence, then confirm it does not return.

Vehicle fitment

Vehicle applicability

Land Rover Range Rover Evoque, Land Rover Discovery Sport

Before clearing

Can the code be cleared?

Clearing a code without fixing the cause removes useful evidence and may only switch the warning off temporarily. Save the full scan first; a permanent or repeatedly returning code needs testing.

A DTC is evidence, not a parts order.

Confirm the suffix, reporting module, model, year, engine and live data before replacing a component.

Verified public evidence

Manufacturer and model coverage

14 public manufacturer records match this search. These records support applicability research but do not replace VIN-specific workshop information.

P2546-86Land Rover Discovery Sport
DISCOVERY · 2016 · Powertrain

…4MY Onwards fitted with 9HP48 9-Speed Automatic Transmission: Retailers reporting these vehicles are flagging the following (TCM) Transmission control module DTC?s P2545-86 and/or P2546-86 codes during SDD DTC read or…

Source

P2546-86Land Rover Discovery Sport
DISCOVERY · 2017 · Powertrain

Source

P2546-86Land Rover Discovery Sport
DISCOVERY · 2018 · Powertrain

Source

P2546-86Land Rover Discovery Sport
DISCOVERY SPORT · 2015 · Powertrain

Source

P2546-86Land Rover Discovery Sport
DISCOVERY SPORT · 2015 · Powertrain

Source

P2546-86Land Rover Discovery Sport
DISCOVERY SPORT · 2016 · Powertrain

Source

P2546-86Land Rover Range Rover Evoque
RANGE ROVER EVOQUE · 2014 · Powertrain