OBD Guide
ENFRDEESPT

P1600

ECM BATT Malfunction

P1600 is an OBD-II diagnostic trouble code meaning: ECM BATT Malfunction. Common causes: low or faulty battery, problems with the generator. Estimated repair cost: $56–333.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–333 (est.)

Symptoms

  • The engine stalls or runs erratically
  • Difficulty starting the engine
  • Check Engine Light Is On
  • Loss of engine power
  • Malfunctions of the car's electronic systems

Causes

  • Low or faulty battery
  • Problems with the generator
  • Damage to the wiring harness to the ECU
  • Oxidation or poor contact in ECU connectors
  • Malfunction of the engine control unit itself

How to Fix

  1. Check battery and generator voltage
  2. Inspect the connectors and wiring to the ECU for damage
  3. Check and clean the contacts of the ECU connectors
  4. Check the fuses associated with the ECU power supply
  5. If necessary, replace the ECU

Related codes

P0600P0601P0602

Error P1600 by Vehicle Brand

BuickCadillacChevroletFordGMGMCJaguarLexusLincolnMazdaMercuryMitsubishiOldsmobileSaturnSuzukiToyotaVolkswagen

FAQ

What does the P1600 code mean?

P1600 is an OBD-II diagnostic trouble code that indicates: ECM BATT Malfunction

What causes a P1600 error code?

The most common causes of P1600 include: Low or faulty battery; Problems with the generator; Damage to the wiring harness to the ECU; Oxidation or poor contact in ECU connectors.

How do I fix a P1600 diagnostic trouble code?

To fix P1600: Check battery and generator voltage. Inspect the connectors and wiring to the ECU for damage. Check and clean the contacts of the ECU connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1600?

Do not drive — repair immediately

How much does it cost to fix P1600?

The estimated repair cost for P1600 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat