Chevrolet P2457
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
Quick answer
For Chevrolet vehicles covered by bulletin PIP5684/PIP5684A/B/C, P2457 may be present with reduced engine power. The bulletin states that a leak in the charge-air-cooler/induction system may be the cause. Follow GM Service Information (SI) diagnostics; if needed, a technician may use GE-52250 smoke diagnostic leak detector during diagnosis.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
Videos are supporting material and never override OEM or regulator evidence.
1. What does P2457 mean?
For Chevrolet vehicles covered by bulletin PIP5684/PIP5684A/B/C, P2457 may be present with reduced engine power. The bulletin states that a leak in the charge-air-cooler/induction system may be the cause. Follow GM Service Information (SI) diagnostics; if needed, a technician may use GE-52250 smoke diagnostic leak detector during diagnosis.
2. Technical explanation
Verified evidence does not provide a full component-level definition of P2457. In the cited Chevrolet manufacturer communications, P2457 is one of several history or current DTCs that may be found when the engine has reduced power. The bulletin identifies a possible leak in the charge-air-cooler/induction system and directs technicians to follow SI diagnostics. If no cause is found or a leak check is needed, the bulletin says the GE-52250 power smoke diagnostic leak detector can be helpful.
3. What system is affected?
Charge-air-cooler/induction system is identified as a possible area of concern in the cited bulletin. A definitive affected system for P2457 alone is not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied evidence reports reduced engine power in the bulletin scenario, but does not assign a severity level to P2457 alone.
5. Symptoms you may notice
- Reduced engine power may be present in the bulletin scenario.
- P2457 may be stored as a history or current DTC with other listed codes.
6. Possible causes
- A leak in the charge-air-cooler/induction system may be the cause in the bulletin scenario.
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 diagnosis using applicable Chevrolet/GM Service Information procedures.
- Do not perform a smoke leak test or other repair procedure unless qualified and equipped to do so.
10. Step-by-step troubleshooting
- Follow SI diagnostics, as directed by Chevrolet bulletin PIP5684 and its revisions.
- If no cause is found or a leak check is required, the bulletin identifies the GE-52250 power smoke diagnostic leak detector as potentially helpful.
11. When to contact service
Contact a Chevrolet/GM-qualified service facility for SI-based diagnosis, particularly if reduced engine power is present.
12. What the service center may check
- Retrieve and evaluate current and history DTCs.
- Follow the applicable GM SI diagnostic procedure.
- Inspect for a possible charge-air-cooler/induction-system leak as directed by SI.
- When required during diagnosis, perform an appropriate leak check; PIP5684 identifies GE-52250 as helpful for this purpose.
13. Possible repair or resolution
- Repair resolution is not yet established by verified evidence. The supplied bulletin directs diagnosis rather than specifying a universal repair.
14. Affected vehicles
- Chevrolet Bolt EV · 2011–2018 · US
- Chevrolet Spark · 2011–2018 · US
- Chevrolet Volt · 2011–2018 · US
15. Related TSBs / service bulletins
- Chevrolet PIP5684, NHTSA manufacturer communication 10167455, published October 22, 2019: P2457 is among DTCs that may accompany reduced engine power; a charge-air-cooler/induction-system leak may be involved. https://static.nhtsa.gov/odi/tsbs/2019/MC-10167455-9999.pdf
- Chevrolet PIP5684A, NHTSA manufacturer communication 10176300, published May 5, 2020. https://static.nhtsa.gov/odi/tsbs/2020/MC-10176300-9999.pdf
- Chevrolet PIP5684B, NHTSA manufacturer communication 10178370, published July 13, 2020. https://static.nhtsa.gov/odi/tsbs/2020/MC-10178370-9999.pdf
- Chevrolet PIP5684C, NHTSA manufacturer communication 10182564, published October 22, 2020. https://static.nhtsa.gov/odi/tsbs/2020/MC-10182564-9999.pdf
16. Recall information
- No recall information was supplied or established by verified evidence.
17. Official manufacturer information
Verified manufacturer communications are Chevrolet PIP5684 and revisions PIP5684A, PIP5684B, and PIP5684C, published through NHTSA. The supplied applicability data lists US Chevrolet Bolt EV, Spark, and Volt model years 2011–2018; however, the evidence summaries do not independently establish exact engine, trim, or campaign applicability.
- NHTSA: NHTSA Manufacturer Communication PDF 10167455: PIP5684 · official_tsb
- NHTSA: NHTSA Manufacturer Communication PDF 10176300: PIP5684A · official_tsb
- NHTSA: NHTSA Manufacturer Communication PDF 10178370: PIP5684B · official_tsb
- NHTSA: NHTSA Manufacturer Communication PDF 10182564: PIP5684C · official_tsb
19. Frequently asked questions
What does P2457 mean for this Chevrolet bulletin?
The verified bulletin evidence does not provide a standalone definition. It lists P2457 among possible history or current DTCs in a reduced-engine-power concern.
Can a leak cause P2457?
The bulletin says a leak in the charge-air-cooler/induction system may cause the concern described, where P2457 can be one of multiple codes present. It does not establish that every P2457 is caused by a leak.
What diagnosis does Chevrolet direct?
Follow SI diagnostics. If no cause is found or a leak check is required, the bulletin states that GE-52250 can be helpful.
Is it safe to drive or charge?
Not yet established by verified evidence.