OBD Guide
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C1254

Abnormal Shutdown Detected

C1254 is an OBD-II diagnostic trouble code meaning: Abnormal Shutdown Detected. Common causes: battery discharge or replacement, accidental disconnection of battery terminals. Estimated repair cost: $3–167.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$3–167 (est.)

Symptoms

  • The ABS or ESP indicator lights up after the engine starts
  • Diagnostic code C1254
  • The code may appear after the battery is discharged or the terminals are disconnected
  • Other error codes stored with C1254
  • The indicators go out after resetting the codes (if there are no other problems)

Causes

  • Battery discharge or replacement
  • Accidental disconnection of battery terminals
  • Jump or sag in on-board network voltage
  • ABS unit power relay malfunction
  • Malfunction of the battery itself (deep discharge at startup)

How to Fix

  1. Read all error codes with a scanner - it is important to check if there are other codes besides C1254
  2. Check the condition of the battery (capacity, open circuit voltage, starting current)
  3. Check battery terminals for tightness and absence of oxidation.
  4. Check the alternator charging voltage (should be 13.8–14.5V at idle)
  5. Reset code C1254 with a scanner and check if it comes back
  6. If the code returns regularly for no apparent reason, check the power supply circuit of the ABS unit

Related codes

C1085C1281C10ECC1200

FAQ

What does the C1254 code mean?

C1254 is an OBD-II diagnostic trouble code that indicates: Abnormal Shutdown Detected

What causes a C1254 error code?

The most common causes of C1254 include: Battery discharge or replacement; Accidental disconnection of battery terminals; Jump or sag in on-board network voltage; ABS unit power relay malfunction.

How do I fix a C1254 diagnostic trouble code?

To fix C1254: Read all error codes with a scanner - it is important to check if there are other codes besides C1254. Check the condition of the battery (capacity, open circuit voltage, starting current). Check battery terminals for tightness and absence of oxidation.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1254?

Yes, but get it checked soon

How much does it cost to fix C1254?

The estimated repair cost for C1254 is $3–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat