2015 Z06 CEL – help needed
Thread Starter
Racer
Joined: Oct 2011
Posts: 301
Likes: 117
From: Brentwood TN
2015 Z06 CEL – help needed
Check Engine light came on. 50,500 miles.
No other issues with car evident.
Mods: No cats, Tex Spd headers, Borla ehaust. Intake, 2019 SC lid, port/polished TB, new battery 600 miles ago
Codes:
B2570 – Trunk lamp control circuit
B3883 – Short to battery – License plate circuit
B048C – Humidity sensor circuit
P184C – Transmission cooling fan control circuit – cant erase
These next five I cant erase:
P0446 – EVAP vent system performance
P0480 – Cooling fan speed output circuit
P0498 – EVAP emission vent solenoid valve control circuit low voltage
P0691 Cooling fan speed circuit low voltage
P26C8 – Chassis control module requested MIL illumination
Questions – which of these likely are causing the dash CEL? And any thoughts on resolving these? Common thread or possibly all individual issues?
Thanks!!!!
No other issues with car evident.
Mods: No cats, Tex Spd headers, Borla ehaust. Intake, 2019 SC lid, port/polished TB, new battery 600 miles ago
Codes:
B2570 – Trunk lamp control circuit
B3883 – Short to battery – License plate circuit
B048C – Humidity sensor circuit
P184C – Transmission cooling fan control circuit – cant erase
These next five I cant erase:
P0446 – EVAP vent system performance
P0480 – Cooling fan speed output circuit
P0498 – EVAP emission vent solenoid valve control circuit low voltage
P0691 Cooling fan speed circuit low voltage
P26C8 – Chassis control module requested MIL illumination
Questions – which of these likely are causing the dash CEL? And any thoughts on resolving these? Common thread or possibly all individual issues?
Thanks!!!!
Melting Slicks
Joined: Aug 2018
Posts: 2,014
Likes: 1,591
From: Clermont, Florida
I would start by checking everything on the battery and chrome bridge for tightness and the black wire attached to negative terminal. Since the battery was installed recently something might have come loose. Good light finding resolution to issue.
Thread Starter
Racer
Joined: Oct 2011
Posts: 301
Likes: 117
From: Brentwood TN
Thanks - the black wire was broken off - fixed it a few hundred miles ago. (Have had car for about 600 miles; dealer installed new battery before I purchased) I will double check the connections though.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Check Engine light came on. 50,500 miles.
No other issues with car evident.
Mods: No cats, Tex Spd headers, Borla ehaust. Intake, 2019 SC lid, port/polished TB, new battery 600 miles ago
Codes:
B2570 – Trunk lamp control circuit: This is a Type C DTC and will not set a CEL the only visual indication this code exists is the rear compartment lights don't work.
B3883 – Short to battery – License plate circuit: This is a Type C DTC and will not set a CEL, the only visual indication this CEL exists is the license plate light is always on.
B048C – Humidity sensor circuit: This is a Type C DTC and will not set a CEL, the only noticeable indication this CEL exists is the way the HVAC performs and feels. The system will use the last valid values for the humidity setting or choose 60% if there is no value read when a fault occurs.
P184C – Transmission cooling fan control circuit – cant erase: This is a Type A DTC and will set a CEL.
These next five I cant erase:
P0446 – EVAP vent system performance: This is a Type B DTC and will set a CEL.
P0480 – Cooling fan speed output circuit: This is a Type B DTC and will set a CEL.
P0498 – EVAP emission vent solenoid valve control circuit low voltage: This is a Type B DTC and will set a CEL.
P0691 Cooling fan speed circuit low voltage: This is a Type B DTC and will set a CEL.
P26C8 – Chassis control module requested MIL illumination: This is a Type B DTC and will set a CEL. The Chassis Control Module monitors the Chassis Control System for any failure that affects emissions and then requests the CEL be set. Correct engine control issues before addressing any Chassis Control issues.
Questions – which of these likely are causing the dash CEL? And any thoughts on resolving these? Common thread or possibly all individual issues?
Thanks!!!!
No other issues with car evident.
Mods: No cats, Tex Spd headers, Borla ehaust. Intake, 2019 SC lid, port/polished TB, new battery 600 miles ago
Codes:
B2570 – Trunk lamp control circuit: This is a Type C DTC and will not set a CEL the only visual indication this code exists is the rear compartment lights don't work.
B3883 – Short to battery – License plate circuit: This is a Type C DTC and will not set a CEL, the only visual indication this CEL exists is the license plate light is always on.
B048C – Humidity sensor circuit: This is a Type C DTC and will not set a CEL, the only noticeable indication this CEL exists is the way the HVAC performs and feels. The system will use the last valid values for the humidity setting or choose 60% if there is no value read when a fault occurs.
P184C – Transmission cooling fan control circuit – cant erase: This is a Type A DTC and will set a CEL.
These next five I cant erase:
P0446 – EVAP vent system performance: This is a Type B DTC and will set a CEL.
P0480 – Cooling fan speed output circuit: This is a Type B DTC and will set a CEL.
P0498 – EVAP emission vent solenoid valve control circuit low voltage: This is a Type B DTC and will set a CEL.
P0691 Cooling fan speed circuit low voltage: This is a Type B DTC and will set a CEL.
P26C8 – Chassis control module requested MIL illumination: This is a Type B DTC and will set a CEL. The Chassis Control Module monitors the Chassis Control System for any failure that affects emissions and then requests the CEL be set. Correct engine control issues before addressing any Chassis Control issues.
Questions – which of these likely are causing the dash CEL? And any thoughts on resolving these? Common thread or possibly all individual issues?
Thanks!!!!
Bill
Safety Car
Joined: Mar 2004
Posts: 4,048
Likes: 1,478
From: South Florida
Which of the codes are tagged as "Current" in the scan tool? Usually the codes will have tags such as Permanent, Pending, History or Current.
Whichever ones are Current are likely causing the CEL
Whichever ones are Current are likely causing the CEL
Thread Starter
Racer
Joined: Oct 2011
Posts: 301
Likes: 117
From: Brentwood TN
Hope these definitions help. With so many codes and some of them definitely being voltage related I would suspect a battery or battery connection issue. Check voltage and ground connections. Remember the Corvette has a plastic body that doesn't conduct electricity so both the voltage and ground sides of a circuit have to be checked.
Bill
Bill
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