Engine - Hard Start/Rough Idle/VCT DTC's Set

Bulletin No: 01-011/11

Last Issued: 02/25/2011

Subject:
HARD TO START AND/OR ROUGH IDLE WITH DTCs P0016, P052A, AND P052B

APPLICABLE MODEL(S)/VINS
2010-2011 Tribute vehicles equipped with 2.5L engine

DESCRIPTION

Some vehicles equipped with a 2.5L engine with less than 16,000 Km (10,000 miles) may exhibit diagnostic trouble codes (DTCs) P0016 (Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A), P052A (Cold Start Camshaft Position Timing Over-Advanced - Bank 1) and P052B (Cold Start Camshaft Position Timing Over-Retarded - Bank 1). This may be accompanied by hard to start and/or rough idle concerns.

Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

This may be due to debris that temporarily restricted the movement of the variable camshaft timing (VCT) solenoid.

1. Clear DTCs.

2. Perform drive cycle exercising the throttle to generate VCT movement.

NOTE:
If a concern exists, the DTCs will trigger on the first key event, however it takes a second key event for the malfunction indicator lamp to illuminate.

3. Did the DTCs P0016, P052A or P052B return?

a. No - The DTCs did not return, release vehicle. No further repair required.

b. Yes - DTCs did return, refer to M53 online or Workshop Manual (section 01-01 VARIABLE CAMSHAFT TIMING (VCT) MALFUNCTION).

4. Verify repair.





WARRANTY INFORMATION

NOTE:
^ This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.

^ This repair will be covered under Mazda's New Vehicle Limited Warranty term for a Powertrain Component.

^ Additional diagnostic time cannot be claimed for this repair.