P1403 Acura Exhaust Gas Recirculation System Valve 1

P1403 Acura Exhaust Gas Recirculation System Valve 1

Possible causes

– Faulty Diagnostic Module Tank Leakage (DMTL)
– Diagnostic Module Tank Leakage harness is open or shorted
– Diagnostic Module Tank Leakage circuit poor electrical connection

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1403 Acura Description

The heated DMTL (Diagnostic Module Tank Leakage) is used to monitor the evaporative system for leaks. The diagnostic module consists of an air filter, an heating element, an electrical driven air pump, a change-over valve. In switched off condition the fuel tank breathes through the canister, the changeover valve and the air filter. For purging the canister, the purge control valve is opened and fresh air-flows via air filter, changeover valve and canister into the intake manifold.

Acura Vehicle:

Acura ILX, Acura MDX, Acura RDX, Acura RLX, Acura TL, Acura TSX, Acura ZDX, Acura CSX, Acura EL, Acura Integra, Acura RSX, Acura Legend, Acura Vigor, Acura CL, Acura SLX, Acura NSX, Acura RL, Acura ZDX