1998 Chevrolet Camaro SS, 2D Convertible, StandardFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedures

  1. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK , then go to next step.
    NOTE: If other DTC(s) are present, except P0172 and P0175, diagnose other DTC(s) first.
  2. Warm engine to normal operating temperature. Ensure system is in "closed loop". Using scan tool, select FUEL TRIM DATA LIST and monitor LF FT BN 2. If LT FT BN 2 displayed value is greater than -13 percent, go to next step. If displayed value is not greater than -13 percent, go to step 4).
  3. Turn ignition on, with engine off. Using scan tool, review FREEZE FRAME and/or FAILURE RECORDS data and note parameters. Turn ignition off for about 15 seconds. Start engine and operate vehicle within conditions required for this diagnostic to run, and as close to conditions recorded in FREEZE FRAME/FAILURE RECORDS as possible. Select DTC function then enter DTC P0175. If scan tool indicates that this test failed this ignition, go to next step. If scan tool does not indicate that this test failed this ignition, see DIAGNOSTIC AIDS.
  4. If DTC P0172 is also present, go to next step. If DTC P0172 is not present, go to step 6).
  5. Check for collapsed air intake duck, restricted air filter, improperly mounted MAF sensor, foreign objects blocking inlet screen or for fuel in pressure regulator hose. Repair as necessary. After repairs, go to step 7). If problem is not found or repairs are not necessary, diagnose fuel system. See SYSTEM/COMPONENT TESTS - 5.7L article.
  6. Check for leaking fuel injector(s) in bank 2. If injector(s) are leaking, go to step 9). If injector(s) are okay, go to step 8).
  7. Repair or replace affected components. After repairs, go to step 9).
  8. Replace faulty HO2S. After replacing HO2S, go to next step.
  9. Using scan tool, select DTC, CLEAR INFO function. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter DTC P0175. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step 2).
  10. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTC(s) are displayed, go to applicable DTC test.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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