Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P1486COOLING SYSTEM MALFUNCTION
Manufacturer communications
14Original wording in English
PORSCHE
PORSCHE: DME CONTROL UNIT: FAULT CODE P1486. CHECK ENGINE LIGHT COMES ON; TANK LEAKAGE DIAGNOSTIC MODULE. DEPENDING ON THE CONDITION OF THE VEHICLE AS WELL AS ENVIRONMENTAL CONDITIONS, THE CHECK ENGINE LIGHT CAN COME ON AND FAULT CODE MAY BE ENTERED IN THE DME CONTROL UNIT FAULT MEMORY ON MODEL YEAR 2007. MODELS INCLUDE 911 CARR…
PORSCHE
PORSCHE: DME CONTROL UNIT FAULT CODE P1486. CHECK ENGINE LIGHT COMES ON; TANK LEAKAGE DIAGNOSTIC MODULE. REPLACEMENT OF THE DMTL UNIT IS PRESCRIBED DURING DIAGNOSIS AS THE REMEDIAL ACTION FOR FAULT CODE P1486. *PE
HONDA
THE MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P1486. *TT ALSO DIAGONSTIC TROUBLE CODE P0128. *TS
HONDA
UNDER CERTAIN DRIVING CONDITIONS AFTER A COLD START, THE ECM/PCM CAN MISCALCULATE HOW FAST THE ENGINE COOLANT TEMPERATURE RISES AND SET DIAGNOSTIC TROUBLE CODE (DTC) P0128 OR P1486 (COOLING SYSTEM MALFUNCTION). HONDA SERVICENEWS. *TT
Check vehicle applicability
16A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
EGRA Circuit Malfunction
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.