Engine Controls - Low Power/MIL ON/Multiple DTC's Set

FORENZA

Section Title: Engine
TSB No. TS 18 02228

Division: Automotive
Category: Technical

SUBJECT:
ENGINE HAS NO POWER, HESITATES, STUMBLES ON ACCELERATION, CHECK ENGINE LIGHT IS ON WITH MULTIPLE DTCS WITH P161B (CONTROL MODULE TORQUE PERFORMANCE) AS THE PRIMARY DTC

MODEL(S):
FORENZA, FORENZA WAGON, RENO (RQ420)

YEAR:
2004~2008

CONDITION:





At temperatures of 0°C (32°F) or below, the engine may have limited power, hesitate, or stumble with the check engine light ON, and multiple DTCs stored, see chart above.

CAUSE:
Ice build up on the manifold absolute pressure (MAP) sensor port.

CORRECTION:
The new MAP sensor port has been enlarged to prevent condensation from covering the port and freezing. Replace the MAP sensor with the updated part shown. Use scan tool to clear all DTCs from the ECM memory.





PARTS INFORMATION:





WARRANTY INFORMATION:





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