Honda Error Code P1607: How to Fix It
Hard 2-4 hours High Severity
Verified June 2026
- Error Code
- P1607
- Brand
- Honda
- Product Type
- automotive
- Severity
- High
- DIY Difficulty
- Hard
- Estimated Fix Time
- 2-4 hours
Ad
Tools You'll Need
- OBD2 scanner
- Digital multimeter
- Basic hand tools
- Wire back-probing kit
- Battery terminal cleaner
- Baking soda and water
How to Fix Error Code P1607
-
Turn off engine and ensure safety
Never work on electrical components with the engine running or key in the ignition -
Connect OBD2 scanner and verify error code
-
Check battery voltage and connections
Disconnect negative battery terminal first, reconnect it last to prevent sparks -
Inspect ECM/PCM power and ground circuits
Do not probe ECM connectors with sharp tools - use proper back-probing techniques -
Perform ECM/PCM reset procedure
-
Re-scan for codes after reset
Parts You May Need
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
ECM/PCM replacement unit
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Digital multimeter
Check Price on Amazon
Battery terminal cleaner
Check Price on Amazon
Ad
When to Call a Professional
Call a professional Honda technician if P1607 returns after reset, if you're uncomfortable working with electrical systems, or if multiple related codes appear. ECM/PCM replacement requires programming and may need dealer-level diagnostic equipment. Internal ECM failures often require specialized repair or replacement that's beyond typical DIY capability.Frequently Asked Questions
Can I drive my Honda with P1607 error code?
You should avoid driving with P1607 as it indicates internal ECM/PCM failure. This can cause unpredictable engine behavior, poor performance, or potential safety issues. Drive only to a repair facility if absolutely necessary.
How much does it cost to fix Honda P1607 error?
ECM/PCM replacement costs typically range from $800-2000 including parts and labor. Refurbished units may cost less. Programming and calibration add $100-300. Some cases may be repairable for $300-600.
What causes Honda P1607 error code?
Common causes include internal ECM circuit failure, power supply issues, ground circuit problems, water damage to the ECM, electrical surges, or manufacturing defects. Age and heat cycling can also cause internal component failure.
Will P1607 clear itself on Honda vehicles?
P1607 will not clear itself as it indicates hardware failure. The code may temporarily disappear after battery disconnection but will return quickly if the internal ECM issue persists.
Can a bad battery cause Honda P1607 code?
While a severely failing battery or charging system can stress the ECM, P1607 specifically indicates internal circuit failure rather than external power issues. However, electrical problems should be ruled out first.