Chrysler P0AA4
Hybrid Battery Negative Contactor Circuit Stuck Closed. P0A79-00 - Drive Motor B Inverter Performance. P1AEF-00 - MCPB High Voltage Ba
Quick answer
For a 2017 Chrysler Pacifica in the US, verified manufacturer communication 08-107-17 lists DTC P0AA4-00 as “Hybrid Battery Negative Contactor Circuit Stuck Closed.” The supplied evidence does not establish the vehicle’s drivability, charging status, severity, cause, or required 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 P0AA4 mean?
For a 2017 Chrysler Pacifica in the US, verified manufacturer communication 08-107-17 lists DTC P0AA4-00 as “Hybrid Battery Negative Contactor Circuit Stuck Closed.” The supplied evidence does not establish the vehicle’s drivability, charging status, severity, cause, or required repair.
2. Technical explanation
P0AA4-00 is identified in the verified NHTSA-hosted manufacturer communication as “Hybrid Battery Negative Contactor Circuit Stuck Closed.” This identifies a reported condition involving the hybrid battery negative contactor circuit. The supplied evidence does not provide diagnostic steps, electrical test values, component-level failure confirmation, or repair instructions.
3. What system is affected?
Hybrid battery negative contactor circuit.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange assessment by a qualified Chrysler/EV service facility. The supplied evidence does not establish owner-level diagnostic or repair actions.
- Do not attempt high-voltage battery or contactor repair based on this information.
10. Step-by-step troubleshooting
- The verified evidence identifies the DTC meaning only. It does not establish a troubleshooting procedure, measurements, or decision tree.
11. When to contact service
The supplied official manufacturer communication lists this DTC for the applicable vehicle. Service need and urgency are not yet established by verified evidence; a qualified Chrysler service facility can evaluate the stored DTCs.
12. What the service center may check
- Confirm whether P0AA4-00 is present using appropriate diagnostic equipment.
- Use applicable Chrysler service information for diagnosis. Specific checks are not established by the supplied verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Chrysler Pacifica · 2017 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 10216308, Chrysler communication 08-107-17, published November 3, 2017. It lists P0AA4-00 as “Hybrid Battery Negative Contactor Circuit Stuck Closed.”
- NHTSA Manufacturer Communication 10217489, Chrysler communication 08-107-17, published November 3, 2017. It lists P0AA4-00 as “Hybrid Battery Negative Contactor Circuit Stuck Closed.”
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Applicable verified vehicle coverage: 2017 Chrysler Pacifica, US. Official source: NHTSA-hosted Chrysler manufacturer communication 08-107-17 (NHTSA IDs 10216308 and 10217489): https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2015-2019.zip#nhtsa_id=10216308
- NHTSA: NHTSA Manufacturer Communication 10216308: 08-107-17 · official_tsb
- NHTSA: NHTSA Manufacturer Communication 10217489: 08-107-17 · official_tsb
19. Frequently asked questions
What does P0AA4-00 mean on the applicable Chrysler Pacifica?
The verified Chrysler manufacturer communication defines P0AA4-00 as “Hybrid Battery Negative Contactor Circuit Stuck Closed.”
Which vehicle is supported by the supplied applicability evidence?
A 2017 Chrysler Pacifica in the US.
Can the vehicle be driven or charged with P0AA4-00?
Not yet established by verified evidence.
Does the supplied evidence identify the failed part or repair?
No. A specific cause, failed part, and repair resolution are not yet established by verified evidence.