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Chevrolet P2459

The technician should follow SI diagnostics. If no cause for the concern is found or during diagnosis a leak check is required, power smoke diagnostic leakdetector GE-52250 can be

DriveNot yet established by verified evidence. The communications describe reduced engine power but do not provide a driving recommendation for P2459.
ChargeNot yet established by verified evidence.
ServiceProfessional diagnosis is appropriate because GM's verified guidance directs technicians to follow SI diagnostics and may require a diagnostic leak check.
Confidence95%

Quick answer

For Chevrolet vehicles covered by the supplied applicability data, P2459 is included in GM/NHTSA manufacturer communications PIP5684 through PIP5684C concerning reduced engine power and possible charge-air-cooler/induction-system leaks. Follow GM Service Information (SI) diagnostics. The supplied evidence does not establish a standalone P2459 definition, driving status, charging status, 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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How to Fix P2459 Engine Error Code in ChevroletAuto User Guide

Videos are supporting material and never override OEM or regulator evidence.

1. What does P2459 mean?

For Chevrolet vehicles covered by the supplied applicability data, P2459 is included in GM/NHTSA manufacturer communications PIP5684 through PIP5684C concerning reduced engine power and possible charge-air-cooler/induction-system leaks. Follow GM Service Information (SI) diagnostics. The supplied evidence does not establish a standalone P2459 definition, driving status, charging status, or a specific repair.

2. Technical explanation

The verified manufacturer communications list P2459 among numerous history or current DTCs that may be present when the engine has reduced power. They state that the concern may be caused by a leak in the charge air cooler or induction systems. GM directs technicians to follow SI diagnostics; when no cause is found or a leak check is required during diagnosis, the GE-52250 power smoke diagnostic leak detector may help locate the leak. This is a diagnostic direction for trained service personnel, not confirmation that every P2459 is caused by a leak.

3. What system is affected?

Charge air cooler / induction systems are identified in the verified manufacturer communications. A specific EV high-voltage, battery, charging, or propulsion system is not established by the supplied evidence.

4. How serious is this code?

Unknown. The verified communications mention reduced engine power in the described condition, but do not assign a severity level to P2459 alone.

5. Symptoms you may notice

  • Reduced engine power is described in the manufacturer communications associated with the listed DTC combinations, including P2459.
  • Other symptoms are not yet established by verified evidence.

6. Possible causes

  • A leak in the charge air cooler / induction systems may cause the concern described in GM communications PIP5684 through PIP5684C.
  • No other cause is established by the supplied verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence. The communications describe reduced engine power but do not provide a driving recommendation for P2459.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Arrange diagnosis using the applicable GM Service Information (SI) procedures.
  • Do not attempt charge-air, induction, smoke-test, or high-voltage repair procedures unless qualified and equipped to do so.
  • If reduced engine power is present, use professional service guidance to determine whether operation is appropriate.

10. Step-by-step troubleshooting

  1. A technician should follow GM SI diagnostics.
  2. If no cause is found, or if SI diagnosis requires a leak check, the manufacturer communication states that the GE-52250 power smoke diagnostic leak detector can be helpful in locating a leak.
  3. The supplied evidence does not establish additional step-by-step troubleshooting procedures.

11. When to contact service

Professional diagnosis is appropriate because GM's verified guidance directs technicians to follow SI diagnostics and may require a diagnostic leak check.

12. What the service center may check

  • Retrieve and assess P2459 together with any other current or history DTCs.
  • Follow applicable GM SI diagnostics.
  • Evaluate for a charge air cooler / induction-system leak when indicated by diagnosis.
  • Use a GE-52250 power smoke diagnostic leak detector if no cause is found or a leak check is required during diagnosis, as stated in the manufacturer communication.

13. Possible repair or resolution

  • No specific repair is established by the supplied evidence. Repair should be based on the result of GM SI diagnostics and any confirmed leak or other diagnosed fault.

14. Affected vehicles

15. Related TSBs / service bulletins

  • GM PIP5684, published October 22, 2019; NHTSA manufacturer communication MC-10167455-9999: lists P2459 among DTCs associated with reduced engine power and states a charge air cooler / induction-system leak may be the cause. https://static.nhtsa.gov/odi/tsbs/2019/MC-10167455-9999.pdf
  • GM PIP5684A, published May 5, 2020; NHTSA manufacturer communication MC-10176300-9999: revised communication with the same supplied diagnostic direction. https://static.nhtsa.gov/odi/tsbs/2020/MC-10176300-9999.pdf
  • GM PIP5684B, published July 13, 2020; NHTSA manufacturer communication MC-10178370-9999: revised communication with the same supplied diagnostic direction. https://static.nhtsa.gov/odi/tsbs/2020/MC-10178370-9999.pdf
  • GM PIP5684C, published October 22, 2020; NHTSA manufacturer communication MC-10182564-9999: revised communication with the same supplied diagnostic direction. https://static.nhtsa.gov/odi/tsbs/2020/MC-10182564-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified source: NHTSA-hosted GM manufacturer communications PIP5684, PIP5684A, PIP5684B, and PIP5684C. Supplied applicability records identify Chevrolet Bolt EV, Spark, and Volt, US region, model years 2011–2018. Exact vehicle, powertrain, and bulletin applicability should be confirmed through GM service information using the VIN.

19. Frequently asked questions

What does P2459 mean here?

The supplied record does not establish a standalone definition for P2459. It contains GM communication text directing technicians to follow SI diagnostics and noting that charge air cooler / induction-system leaks may cause the described reduced-power concern.

Can a charge-air or induction leak cause P2459?

GM's supplied communications say such a leak may be the cause of the described concern when P2459 is among the listed DTCs. They do not establish that it is the cause in every case.

Is this a charging or high-voltage battery fault?

Not yet established by verified evidence. The supplied communications identify charge air cooler / induction systems, not a high-voltage battery or charging-system fault.

What should a technician do?

Follow GM SI diagnostics. If no cause is found or a leak check is required, the communication says a GE-52250 power smoke diagnostic leak detector can be helpful in locating a leak.

20. Sources & verification

ReferenceVerified
Chevrolet P2459: The technician should follow SI diagnostics. If no… | EV Diagnostics