Land Rover P0AA0-66
COUNTER B) - TOO FREQUENT https://topix.landrover.jlrext.com/topix/content/document/view?id=1403504 2/2 Land Rover warranties – Please view the JLR Global Warranty Manual for furth
Common search variants: P0AA066 · P0AA0 66 · P0AA0_66 · Search ignores case and common separators.
Quick answer
For 2019–2021 Land Rover Range Rover vehicles in the US, DTC P0AA0-66 is documented in Land Rover SSM75687 as “PHEV BATTERY (P0AA0-66 - COUNTER B) - TOO FREQUENT.” The supplied verified evidence does not establish vehicle behavior, driving safety, charging safety, or a specific repair.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does P0AA0-66 mean?
For 2019–2021 Land Rover Range Rover vehicles in the US, DTC P0AA0-66 is documented in Land Rover SSM75687 as “PHEV BATTERY (P0AA0-66 - COUNTER B) - TOO FREQUENT.” The supplied verified evidence does not establish vehicle behavior, driving safety, charging safety, or a specific repair.
2. Technical explanation
The verified source is NHTSA Manufacturer Communication PDF 10208762, Land Rover SSM75687, published February 18, 2022. Its title identifies P0AA0-66 as a PHEV battery-related diagnostic entry: “PHEV BATTERY (P0AA0-66 - COUNTER B) - TOO FREQUENT.” The source also refers to an immobiliser and says that, if present, it should be identified to the customer. It further states that non-approved or non-recommended parts, products, or accessories may result in consequential loss or damage not covered by Land Rover warranties. The source says a TOPIx DTC help-text update was in progress and that the SSM would be deleted once that update was live.
3. What system is affected?
PHEV battery, as identified by the title of Land Rover SSM75687. More specific subsystem identification is not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied diagnostic record lists severity as unknown, and the verified source does not assign a severity level.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- The verified source references an immobiliser and instructs personnel to identify it to the customer if present.
- The source warns about non-approved or non-recommended parts, products, or accessories in connection with possible consequential loss or damage and warranty coverage.
- A direct, exclusive technical cause for P0AA0-66 is not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied diagnostic record lists safe-to-drive status as unknown. Do not infer driving safety from the available bulletin.
8. Can I charge the vehicle?
Unknown. The supplied diagnostic record lists safe-to-charge status as unknown. Do not infer charging safety from the available bulletin.
9. What you can safely do
- Arrange assessment by an authorized Land Rover retailer or qualified service provider if P0AA0-66 is present.
- Tell the service provider whether an immobiliser or any non-approved/non-recommended parts, products, or accessories are installed.
- Do not perform high-voltage battery diagnosis or repair without appropriate qualified service procedures and equipment.
10. Step-by-step troubleshooting
- Verify the stored DTC is P0AA0-66 and record all accompanying diagnostic information for the service provider.
- Check whether an immobiliser is installed and disclose its presence to the service provider, consistent with SSM75687.
- The supplied evidence does not provide a verified step-by-step diagnostic procedure.
11. When to contact service
Service requirement is listed as unknown in the supplied diagnostic record. Because the available official communication concerns a PHEV battery DTC and refers to immobiliser presence, contact an authorized Land Rover retailer or qualified service provider for case-specific diagnosis.
12. What the service center may check
- Confirm whether an immobiliser is present, as specifically referenced in Land Rover SSM75687.
- Review installed non-approved or non-recommended parts, products, or accessories, as referenced by the bulletin.
- Consult the current TOPIx DTC help text, because SSM75687 states that a help-text update was in progress.
- Additional service checks are not yet established by verified evidence.
13. Possible repair or resolution
- No specific repair, replacement, reprogramming, or adjustment is established by the supplied verified evidence.
- The source states that the SSM was expected to be deleted after a TOPIx DTC help-text update became live.
14. Affected vehicles
- Land Rover Range Rover · 2019–2021 · US
15. Related TSBs / service bulletins
- Land Rover SSM75687, published through NHTSA as Manufacturer Communication PDF 10208762 on February 18, 2022.
- Bulletin title: “PHEV BATTERY (P0AA0-66 - COUNTER B) - TOO FREQUENT.”
- The bulletin references an immobiliser, warranty implications associated with non-approved/non-recommended items, and a pending TOPIx DTC help-text update.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA Manufacturer Communication PDF 10208762, Land Rover SSM75687, published February 18, 2022: https://static.nhtsa.gov/odi/tsbs/2022/MC-10208762-0001.pdf
19. Frequently asked questions
What does Land Rover code P0AA0-66 mean?
The supplied Land Rover communication identifies it as “PHEV BATTERY (P0AA0-66 - COUNTER B) - TOO FREQUENT.” The supplied evidence does not provide a fuller technical definition.
Which vehicles are covered by the supplied applicability evidence?
Land Rover Range Rover vehicles for model years 2019 through 2021 in the US, with supplied applicability confidence of 0.95.
Is it safe to drive with P0AA0-66?
Not yet established by verified evidence. The supplied diagnostic record marks safe-to-drive status as unknown.
Is it safe to charge with P0AA0-66?
Not yet established by verified evidence. The supplied diagnostic record marks safe-to-charge status as unknown.
Does the bulletin identify an immobiliser?
Yes. SSM75687 says that if an immobiliser is present, it should be highlighted to the customer.
Does the bulletin provide a confirmed repair?
No. A confirmed repair is not established by the supplied verified evidence.